Alan Kay: Normal Considered Harmful (2009)
From Viewpoints Intelligent Archive
this is a kind of a fortress set
kind of the professor against the students
but the cable is short so
I have to duck back there periodically
thank
you all for coming out I believe I'm the second prize
in the raffle
this
this talk is
is about some of the ways I
think about our field it's not particularly technical
it asks a lot of questions
it's an attempt to be critical
without being a rant and
it won't
be successful unless I can get you
to interact periodically there'll
be a couple of opportunities early in the
talk and the title of the talk
deals with two
properties of frogs
one of them is
that their nervous systems like all nervous systems
are mainly interested in differences
but unlike
us they are able
to habituate very rapidly and
so it is amazingly true
that if you put a frog in a pot of water and heat
it up very slowly they will not get out
because the the difference
is that their nervous system are detecting are
too small over the unit of time that their nervous systems work
on and they
will just stay there until they cook and
of course we aren't like that
and the
other interesting property of flies which i think is
one of the most amazing
properties and it was first
discovered in a landmark
paper called what the frog's eye tells the frog's brain
and you may or may not know that the
retina in your eye is acts
part of your brain is actually extended
out from your brain and your eye actually
does a little bit of thinking right
in the eye for efficiency reasons
for frogs their eyes
do a lot of thinking thinking
that actually triggers behavior and
so
one of the most interesting things about a frog
this if you take its natural food which your flies
paralyze them with a little chloroform
but peep them alive and put them
in front of a frog it will starve itself to death
because its conception of a fly is
not that if you
take oblong shaped pieces of cardboard
and throw them at the Frog it
will eat them until it's stuffed because
it's built
in pattern for food is an
oblong thing that's moving and
there's no limit to the amount of cardboards
that a frog will try to try to eat
so one of the ways of
looking at this is that the frogs both
of these conceptions of normal that the frog
has are quite harmful for it
under certain conditions so it considers
normal food to be oblong things that move
and it considers a
non change in temperature as
far as it can detect it to be quite safe for itself
so this is the famous Pogo cartoon
this
true of so many things about us humans
trace back some problem
and very often the
trace is back not to physical nature but to human nature
and I think this is the
problem in many fields a little
bit later we'll talk about how the biologists have
dealt with some of the same problems that we have in computing
so
first so here's our first opportunity for interaction
who's that first guy Newton
who's the second guy
Darwin and
the third guy the most famous face
on the planet
who's that first guy
who's the second guy
nope who's
the third guy
who's the fourth guy
and who's
the fifth guy pardon
nope so first
guys John McCarthy
never heard of him
so
these guys are all magic
people in our field so
John did many of the most seminal things to
this day in the
field of reasoning and programming
languages second guy is Ivan Sutherland
he only invented computer graphics and
in a way more interesting than most computer graphics
today probably if
you had to pick the most powerful
groundbreaking distance
from zero thesis
that has ever been done in our field it's his thesis and if
you don't know what he looks like then
I'm sure you don't haven't read that thesis and
Engelbart so
what did angle Bart do okay
what else did he do
kay so when
I was giving talks in 2004 this is the question
I asked every audience at every University
everybody had heard of angle Bart in the mouse but
most people don't realize that
Engelbart was the prime
conceived of what we call personal computing today and
the prime conceived er of what
we think of as hyper
linking ideas together over a network with
collaboration between people and the prime conceived
ER of what collaborative work would be like and
by the way he built all of this with his research group in the
60s and it was demo to 3000
people in 1968 41
years ago so an interesting thing here
is to just ponder the
fact that even though you've heard of
Engelbart's name if you
had taken the trouble to type e ngle ba
RT into google within the first three
hits some of them you will be doing it right now you'll
find the bootstrap Institute which have the
75 seminal papers that he and his group wrote
and you'll also find the videos
of that what
mother of all demo in 1968
and yet in fact
the internet and personal computing were invented just so you could
do that and so now ponder
fact that you do know the name of a famous person in
our field from the past and yet you didn't have the curiosity
or the energy to do that simple little typing
job so if this were physics you
would all be dismissed from the field
because physicists would not tolerate
somebody being in physics and not knowing
quite intimately what the pioneers
and developers of physics including Newton
and Einstein and so forth actually did it's
not an optional idea but in computing
seems to think that it is so part
of my thing to get you
to ponder is I don't think computing is a real field
it acts like a pop culture it
deals in fads and it
doesn't even know its own roots and worse
than that it does not know about the really good things that
done in the past for instance Engelbart's conception
if you were to look at it you would see far exceeds what
Tim berners-lee was thinking about and
his demo far exceeds what you
can even do on the Met and the web today and
why can't we do it today because the
people who set up the web did not know
about Engelbert and did not take the trouble to see if
anybody had been thinking about this so this is the mark
of a pop culture this guy is the world's
greatest computer designer
designer among other things of the Burroughs be 5,000
and that machine implemented in
hardware what we would call a byte coded
interpreter for a higher-level language today today
we can only do it in software because Intel and Motorola don't
know this is a good idea the bharden
knew it was a good idea in 1961 and designed
and built with borrows a computer that
could do that and a lot more so
you can't be in computing and not know what Barton did and
not know who he was and this guy
was part
of the for funders
at ARPA that funded the fundamental
research in the 60s and he was also the
guy who set up Xerox PARC his name is Bob Taylor and
as they used to say in the old days
no bucks no Buck Rogers so
part of the reason the past
actually was quite a bit more successful
in the present is because the funding was done
better and people who knew how to run research
groups like Bob Taylor you
had to do it so I knew you
were going to give that response because
okay how about this picture
parted
yeah so both of you
were right so iliac one
was a johniac
the von neumann princeton
computer and was built here at the university
of illinois and they actually got done before
the Princeton people did so there are several of these
machines built all of the same plans and the Princeton
people are a little bit late
about that I
just love this computer
so
this is one of the first supercomputers to ever be done happen
to be done right on this campus called iliac 2
and it had the
register pipelining
idea even before the IBM stretch did
so this was a really serious computing
machine done on this campus by the professors and
the students kick ass
how about
this
play-doh what was played up
yeah
then
it wasn't exactly the first graphical interface
but so this is a system that was built
by dom Bitzer and colleagues
here at the university of illinois is one of the largest
funded computer-aided
education projects in history
there are a lot of people worked on this and
give you the scope of it 2000 terminals
connected to large control
data mainframes and
the
flatscreen displays on these terminals
were actually invented here at the universe of Illinois so they could
make flat screen display terminals and why did dom
Bitzer want to do it because he wanted to back project colored
slides they wanted to have something that could
do multimedia education so when you use one
of these terminals in the top of these things
was a Kodak slide carousel and
so when you went to learn something you get a slide
carousel that would have the high resolution images that were going to be part
of it put it in there and then you had a 512 by 512
plasma panel display this
is the first flat panel display in the world
that was actually practical done right here at
he University of Illinois and with cooperation from Owens
Corning
shouldn't this makes you proud to be in
University of Illinois computer science department right you
should be because this
place is one of the leaders of the world but
guess what you
guys haven't done a supercomputer for a long time
you haven't done a project like this for a long time
you're using vendors computers
and vendors software and guess what you can't
invent the future by using vendor stuff it's all
looks back in the past the best of it and most
of it is exactly the wrong way of looking at the
future so Illinois like
most places like UCLA where I'm on the faculty
most of the major universities
country have given up the future in favor
of something else most places in
this country when it was really hard to design and
build computers built around yes
well no I don't
think so because this assumes that there's something good
about what you can buy from vendors and
I think
when that's the case it's worthwhile buying
from them but in fact the
vendors are struggling like mad themselves because
Moore's law marches on and they
don't know the first thing about doing parallel computing for
example somebody needed to be doing that a university
is the right place to do it so not
enough has been done and
most of the great inventions come out of a kind of a
something as more like a university culture and by
the way there is a technology called fuel programmable
gate arrays in which regular students like
you and me can sit down and make
a thousand processor
supercomputer by
writing not a lot of pages of code because
the state of FPGA is of in the last year
and a half or so has gone through a knee of
the curve and is now a serious contender for
allowing people to do huge multi processing
projects by themselves if you're interested
we can talk about that a little bit later
so
me years ago my wife who's a writer and an
actress and an artist and so
she had one of these huge Mac cinema
displays on her desk and she showed me this
display and
was kind of
odd over here
she had all the applications
that she used that were WYSIWYG she
really liked them and here all the app the
stuff that she does on the web and none of it was WYSIWYG
at that time and
so
she said in these apps I can see and
do full WYSIWYG opera authoring and
the web browser has all these modes and
I have to type through a keyhole and I have to
wait to see whether what I did was ok and all these
stuff and and why is that she
asked me and I said well it's
because the stuff you like was invented in
the 70s and the stuff you don't like was invented 20 years later
what do you think
about that how
could that happen it's not that
people don't make mistakes
but you like mistakes to go away
yes
yes and it's
quite interesting
of course where was this
invented
web browser was done
by University of Illinois students a little bit after
that age of people that made playdough terminals
and supercomputers
o in 1993
here's mosaic and
one of the interesting things about mosaic
was was it remotely is nice at what angle
Bart had done in 68 and it was full
course they didn't know anything about it Tim
berners-lee who did do the web
at CERN was quite chagrined
when it was pointed out to him just
the sweep of Engelbart's ideas he was very
upset that they did what they
did the way they did it and even
more interesting
five years six years before the web
was HyperCard at Apple which
is the perfect model if you think those of you are familiar with HyperCard
it's the perfect model for what a web browser should actually
be it had full WYSIWYG editing
right in the thing
and anybody who understand this at
all would have realized oh yeah this is the perfect thing
it already has hyperlinking in it there's an editing model
it's been tested on four million users we know it works
nope a bunch of hackers
got together and
one of the ways to think about
this is Engle Bart invented the wheel and Bill
Atkinson with HyperCard invented a better wheel
that's really great and
and unfortunately
I can't even give the web browser
the flat tire award and
or even the square wheel
because you can imagine improving both of those to
good but you know when you invent a broken wheel
there is it isn't
obvious what the wheel is or
it doesn't even work at all flat tire you can you
can run it at the expense of the tire
figure out what the tire should be in a square wheel you
can run it and figure out it should be rounder but a broken
wheel won't work and so attempts to
fix a broken wheel produce more variations
of a broken wheel and we've
had 16 years of them
ok so
let's a man here you are today
let's suppose you're at a computer
science those you had an undergraduate degree in computing
from back then and
you're faced with this idea
that yeah there's this internet that's going all
over the world and
it's going to be not just
consumption mechanism for stuff that's already there but
everybody is going to be an author and a publisher and
so how would you solve that problem
an idea what
would your approach be to it knowing what you know today or
even what you would have known back
this
is a complicated problem right there six billion
people in the world there now a couple
of billion nodes in the internet there
is zillion everybody wants to do something yes
the
is how much work do you want it you want to solve this problem really
well but how
much work do you want how much do you think your browser should actually
know in order to solve this problem really
well because
think of everybody has a different interest in the
web there's many
kinds of media you don't even know what kind
of media is going to be invented and for any given kind of media
there like video there are dozens of different
codecs and just think of the what
problem is so how would you approach this problem
yes
well but
suppose they want to write machine code because they know how
to do something really really fast
like
suppose somebody wants to implement their own codec
yeah
but you're you're partly partly there but
I'm talking about letting people
exercise their creativity and
sometimes they're going to need the
most every resource on the machine to be
used but
of course we can't allow them to take
over the machine so what would you do
yeah
so it's closer it's
almost a good idea after 16
years including see Google has some real interest
in this because Google
did v8 because they couldn't
stand to have the normal conception of a slow
JavaScript and they're
doing the thing that you just mentioned because
they realize that
people who have ideas also
so ok
so
this is an interesting thing
so
it really should be like an operating system kernel right
the
operating system kernel controls address
spaces that can confine computations completely
therefore you can actually allow
any binaries to come down and be used you can
completely control what goes in and what goes
out and all of a sudden
your browser is simply something that allows
bitmaps canvases that you give to
these things to write on to be displayed so
this it's there's nothing you have to do because
you don't want it's like the
the the good
idea in UNIX was hey
we don't want a big operating system we want
the tiniest kernel we can have and then we want to use
address spaces in order to protect everybody from everybody
else so this is this is operating
system 101 this is well known
all the way back in 1965 and 1966
it
should be the first thing that occurs to anybody so I figured somebody
young so
this occurred everybody in the 60s and 70s knew
this is the way to do it we're all surprised it wasn't done
this way but I figured somebody in
the current generation would have figured this out
and so I went looking on the net using
Google looking for downloadable binaries and
stuff like that and I
found this grad student in Cornell
in 1997 Oh far Erlich
son who is from Iceland wrote
this paper in this paper if you just type in
the title of that paper you'll find it's an HTML document
that he put on and on the net in
1997 and his problem by
the way was hey I want to run a Kodak I want
Kodak and I don't want to have a system bin worried about
whether it's an executable or not so it's this thing should be like
an operating system so of course I
wrote an email to him he's at the
University of Iceland now but on leave to Microsoft up
in Mountain View and had
a long correspondence with him on the
pathway of these ideas and
he started a company that Google
acquired and
is using a couple of the ideas but interestingly not
all of the ideas in this paper
which actually solved the problem very nicely so
this is an interesting thing where it
wasn't that somebody didn't understand what
he problem was and what the right solution was it's that
the larger mass was
quite happy to plunge into a de facto standard
even though most of the original people to
use the web we're computer scientists they didn't protest that
this was a very bad way non scalable
way of doing it they just plunged in and sixteen
years later Google is and other companies are
struggling to actually use the internet the way it was intended to be
that's pretty interesting to me
now another story is
35 years ago the
kind of personal computing we think of today was
done at Xerox PARC in 1973
and
much
of the paraphernalia we have today was done in about ten
thousand lines of code Smalltalk code
written for this purpose and
so another
question you could ask is well jeez
the browser is a terrible
design but it does have JavaScript in it and
it turns out JavaScript even though it's slow
today's standards it's faster than an Alto was back
in 1973 so hey why doesn't somebody
just do a whole personal computing system in Java
like everything Windows
interface the overlapping
idea is two and a half D graphics like every
damn thing in it and
so basically what you're doing is just drawing a line and saying
this stuff is crap but
it runs and I
should be able to write 10,000
lines of code so
the basic idea take the rubble that's the browser
make an arch out of it get
the guy who did the job originally at Xerox PARC
Dan Ingalls to do
make
stronger classes in JavaScript make a better
graphics system make the
widgets and stuff to make an application development system and
and an interactive
development environment and if you want
to try this out I
don't have time to do
it but this is what it looks like running completely in a
browser took about five people six months to
do could have been done any time but
nobody knew how to do it has
who had done it before in the past because nobody
knows how to do a system like that in
ten thousand lines all
right so this is a craft that was lost because
people have been used to just building on the stuff that's
there so when this new thing came along it wasn't anybody
around who was working on it that could just say okay
we want to have something like the WYSIWYG
interface and authoring tools and everything else that we enjoy
on the our regular personal computers and we want
o be able to do all of the stuff in the browser so
this
is called the lively kernel it was done while dan
was at Sun you can look that up so
here's another way of looking at this is if
you take the
minimum bar I would say the general practice
today is below that minimum and
take a qualitatively better bar
I'd say that the best that was
done by the ARPA park community like the Internet and the
thernet and personal computing and stuff like that was better I
think the
best knowledge of today is better
than that it's not that everything
is back slid absolutely not it's
not that the people are
not as good as they used to be I'm convinced
that there are more people of high
ability available today than there were 40
years ago there's not a complaint about the people
but I'm complaining about the outlook
of the that
produces such poor results
now the problem is that the real bar today
is above the best of what
ime ago and it's above the best knowledge today this
is the problem this is why companies
are writing millions of lines of hard to deal
with code because the ability
to scale is potentially
there yet you have a
question okay the ability to scale is potentially there
but the knowledge of how to do the scaling is not
there by anybody so the
real way of looking at this is we need something like that
today and we
have to think figure out something that's a little bit above the
best knowledge today that has a stair-step built
into it to get up to where we are also
things are just going to get worse than
they are now so this is a very very difficult
problem it's been fomenting for years I
you are aware of it in one way or another I'm just
I'm pointing it out not so that you believe
it but just so you think about it yourself
so
back to a couple of ideas so
here's the printing press appearing in 1450
and whenever
a new idea appears you get two things
you get news
news is stuff that's incremental
to what we already know this
is why you can tell a news in five minutes
hey a train just crashed we
all know what that means so the
reason we want to know is we're excited by changes like that
but we don't have to have it explained
to us there's no epistemological hurdle
we have to go through to understand that and
so the original idea for
printing press was to do what monks do but do it cheaper
and there are a couple of other side
things but when ideas
are really interesting is also do
and knew is
by definition not like
what we already know so
there's no news about new there's
nothing you can tell somebody in five minutes about
what new is and
new
for the printing press was a
huge change in Outlook for our planet
and one of the changes was
believing to arguing in a new and special way and
it took 150
years to go from the Gutenberg Bible to Galileo
two hundred
years to go to Newton and three
hundred plus years to go to the American Constitution
but one was the driving force for
the these other things now interestingly
about 50 years after the printing press there
were people who were writing in Europe like Erasmus
indicated that they understood completely what the printing press
about and what was going to happen from it but
the larger mass of humanity took
150 to 300 years to actually gradually
change their thinking around to start thinking that
way
ok Leonardo had a high IQ but
he couldn't invent a
single engine for any of his vehicles so
if he had an IQ of 500 and you were born in 10,000
BC you're not going to do a lot you
can outwit everybody before they burn
so Henry
Ford was not nearly as smart as
Leonardo but he was born in a better century so
he revolutionized transportation
so knowledge almost always Trump's
IQ and
the
with knowledge is most of us know a lot but it's
not it's not good knowledge
might even never have been good knowledge
but sometimes it was good knowledge and now it's bad knowledge
so knowledge is this double-edged
sword very powerful when
we have it right and the thing that gets it right for us is
when somebody is able
to change the outlook the fancy word
is epistemological stance the way we actually
look at things and Newton was one of these people
so he changed what knowledge actually meant and
he changed what engineers
and more practical people could do and so
the line there is point of view is worth ad
IQ points you go
from a weak way of looking at something to a strong way of looking
at something that's like getting an extra brain and Newton
is a perfect example because before Newton the
smartest people in the world couldn't do things that a high
school calculus student can easily
do so calculus is like getting
an extra brain and it makes you much
much more able than a genius
who doesn't have it
so these outlook changing things are really critical
so I think of knowledge of
silver outlook as gold and IQ as a lead weight
I believe one
of the biggest problems with computing is in
a sense we have too many smart people
it attracts cleverness and
you can do clever hacks
but the clever hacks don't
scale well and it's very hard to build a
into software it just stays around forever and
so what what's actually happening
is kind of something like building a large garbage dump
that makes it the odor of which makes it
very hard to think about other things so
if we take news
or normal we can think
we can solve problems avoid obstacles
beg every once in while we
have an outlaw thought but
we went to school we went to church we
have parents we live in a world of
normal and for most human
beings the world of normal trumps any weird
new kind of idea
try having one when you're going
out for tenure
think of all the different reviewers who
already have an idea of what computer science should be about
it's crazy
and people start winding up gaming the system and
doing lots and lots of little papers that mean nothing at
all in order to get
the approval of these reviewers whose
ideas about computing might be completely
off but every once in a while
maybe
in an unguarded moment like taking a shower
getting up in the morning or something you
get a Kirpal
not that this kerpow is true most
ideas are mediocre down to bad
but at least you've got a new Kirpal
and these career paths
are the things that need to be tested out science needs
as much as art because you have to get ideas from somewhere
so when you have to be in a state to
get these cows and then you have to have the tools to be
able to discard the Kirpal if it turns out to be
a really stupid idea after all
so think about this is
if the pink plane there is reality
then what do people think the blue plane is
like insanity you
are insane
and learning
something that your brain isn't well set up for could
require almost as much creativity as inventing
place because you have to invent it inside your
head and so
you can say that normal is the
greatest enemy with regard to creating
the new in the way of getting around this
is you have to understand normal not as reality but
just the construct and a
way to do that for example is just travel to a lot of different
countries and you'll find a
thousand different ways of thinking the world is real
all of which are just stories inside of people's heads that's
what we are to normal
is just a construct in to the extent that you can see normal
as a construct in yourself you have freed yourself
from the constraints of thinking that this is the way the
world is because it isn't this is the way we are
so
changing people's minds is hard because of this
so I'm going to give you just two simple dimensions
so this is the whole
human race just
5% of us are intrinsically interested
in ideas 95%
of us are interested
in new ideas and tools just
so far as they contribute to our current goals
so once we have a goal we tend to be fastened
on it you can imagine why so
mething new we
immediately evaluated in terms of our existing goal structure it
doesn't fit into our existing goal structure forget
about it 5% of us
though are get interested in whether
this is an interesting idea or tool intrinsically so
let's take a different dimension
this is one that has been
well studied about 85% of us generally
do things for the approval of others who
are social beings after all
people use
the Internet very much for confirming
disconfirming what they should be thinking about by finding
out what their friends think about so
this is completely normal to human beings about
15% of us
have many of our motivations be internal
so if we do something that we like we
don't really care what other people think and
to the extent that these two dimensions
are independent you get
something like this and
so 1% of us
love
things for their merits and we
don't care what people think
you can imagine what do those people
do with their time and the
other extreme is eighty percent of us are
instrumental and
our goals
are primarily determined by whether other
people approve of them so
think about what these one-percenters actually
do and think about
what happens to those ideas
when they try and get society to change
and then
the other extremes are outer
ideas and tools and a very
dangerous group of people who are inner and instrumental
there are a lot of managers and politicians
in this group
dictators of countries and so forth
okay
here's another analogy it was an old one and
has been shown to be a good one that when it
rains it's somewhat random as to where
a little gully starts
but the gullies have the property
of being self optimizing once
you get one started they are more efficient at
getting water through them and so they erode faster
and so pretty soon
you've got something human
memory is rather like this
basically once we get comfortable about something
we are extremely homeostatic
about it we love our gullies
and they take a long time so
a little bit like the Frog in the pot occasionally
our gullies will do us in because
we can get awfully comfortable and then get surprised
by something like AIDS which takes a long time to
really show up and
we humans have a hard
time forgetting things we don't have the men in black stick
for when we have a bad idea
or learn something that isn't actually not good
for us we can't erase it and so
have this interesting this is something that's been noticed in
programmers there very large percentage of programmers
think like their first programming language for
the rest of their life no matter what programming language they
learn afterwards if you look at their code it looks like that you
what first language they had because that was the first
time they got fluent those were their paradigms for thinking
about problems so
human beings are actually quite anti learning
and
in fact most of these things are
built into our genes
for example we are a coping species
not a product not a species that likes to progress we're
basically social we all have language
so more than three thousand cultures have been
studied by anthropologists and every single one of
them has about 300 things in common and so
the determination is that these things are not things
that were invented but are actually
built into the genes a very human so
once you've and by
the way if you look at these things you can realize if you want
to make a lot of money build an amplifier for any of
these using technology and you'll win
see why so
you know when television came out the
movie people didn't think it was going to sell but
they didn't realize it was a fantasy amplifier that was going to go in everybody's
home of course it's going to win
but they couldn't understand it for what
it was and
you can take a look at things that have not been found
in every culture and a couple of the interesting
ones are at the top
progress as it was called
18th century is an invention it's an idea was
first articulated not so many hundreds
of years ago because back then was the first time when people realized
that the world that their children are going to die and
to be different than the world that they were going to die in and
so the people who wrote the American Constitution even suggested
that there'd be a new Constitutional Convention every 50
because things are going to change fortunately they didn't
carry that out they were unusual
compared to our current puppet politicians and
the things in
blue they're the non universals are harder to learn the
ones in the pink because they're not as
trongly built into us they all had to be invented and
so an accurate picture of
us is that we're pretty much
cave people with briefcases and
there's actually a group of people who study us
as cave people with briefcases called behavioral
economists so
if you've looked at so one of the books is called nudge
by Richard Taylor another great book is called
predictably irrational by Dan Ariely
these are people who study us as we
are and why we actually make decisions even against
our best interests and
most of these decisions are made because of
things that are built into us and this
would be a humorous picture except that the cave
guy with the briefcase has an ICBM in his briefcase
and a lot of other things that are
too easy to invent for technology and the
wrong kinds of things for K people with briefcases to
be carrying around
so
a lot of what's going on today in technology
in general not just in computing is basically for
marketing reasons we automate the pleistocene
so if you look at what
is being sold and used on computers there's almost nothing
that wouldn't be completely recognizable to a cave kid
right
there's hardly any new media on computers
it's all imitations of old media and most
has to do a storytelling of one kind or another
very
little a little bit has to do with those powerful
ideas in blue okay
here's another thing I think you're all familiar with that in
a short period of time change appears linear
but
often that's just because you're looking
at an exponential curve at two finer grain
so these are big surprises for many
people so
for example with silicon
in round 65 we had Moore's
law and that
allowed us to have a very different look at
what was going to happen and we use the
Gretzky theory of hockey anybody know what that is
yes that's
right so they asked him why are you so much
than everybody else and he said well everybody just goes where
the puck is I go where it's going to be so
this is a good idea because it takes time
to invent things so if you invent things
for where the puck is you're going to be behind by the time you
get done so
what you'd like to do is to know
what that technology is going to be out there
and the wonderful thing about computers
is you can get that
by just spending money
that's all
it is that's the easiest thing for Americans to do we just love
money and we make tons of it
so for example that's what the University
of Illinois did when they did iliac 2 they
wanted to get five or ten years in the future in
computing so they built this supercomputer neuter enabled
probe into the future and it cost millions of dollars so
what if they
built something that was not as a compute supercomputer
at that time all they'd learn is obsolete stuff
there was not going to be usable later
so a park
we looked at about
12 years or so to the late 80s and
said we want a computer in 1973
that will compute like the computers are going to compute somewhere
between 1985 and 1990
those cost
$22,000 for us to make we had to invent them
build them we built about 2,000 of them and
so 22,000
in those days was worth about 80,000 today right
so it costs 80,000 bucks to have a 1989
Mac but if you had in 1973
just think of what you could do
that can convened all the stuff that the 1989
Mac was going to run 1989
Mac would have to wind up being like what you did
because nobody else would have the time to
invent this takes years to invent good things
so when I come to a university
and I see students using current day laptops it
drives me crazy
ou're in the past you're
not even in today and
just think about the scope of the stuff
that's already been done you need a lot more leverage
the way to get leverage is to get a ton
of computer power and write very simple
non-optimized languages
that run very very quickly
and you should be able to do them every couple of days
to get power you should be able to just
hrow them away use them like Kleenex because
it's rather easy to write things like that if you don't have
and the way you don't have to optimize is make hardware that
runs a hundred times faster than what you've got today
so unless you do that you can
only do incremental stuff today
so a lot of the incremental ISM today
is the lure of a
cheap computer when it's actually
standing a lot of people's way okay
and so
I think the last set of ideas here is about
problem solving and one
my best friends who died just a couple of years ago it's
one of the great problem solvers in
fact was awarded the mechanical
engineer of the century award in the 20th century it's
one of greatest awards any engineer
can do it this guy was completely
magic about solving problems
so BAM powered flight is
an idea that's been around for a long time and
so Henry Kramer's idea
was well I'm going to offer a large
prize like $100,000
but people
tried to win this prize for 40
years and couldn't do it
Paul
MacCready his
brother-in-law wound up with
$100,000 debt and Paul
being a nice guy he decided to assume it to
make his wife happy all of a sudden Paul was a hundred
thousand and dead and he was driving across the Arizona
desert with his family one day
and he had been the world sail a sail
plane champion a number of times it was a fantastic pilot
this is driving along looking at a hawk
circling in the sky across the Arizona desert
and he suddenly realized that he had seen the
exchange rate of the British pound that morning
in the paper the current exchange rate the
40,000 pound Kramer prize was
worth exactly a hundred thousand American dollars
so he started thinking boy if I could win that
prize I could play off my brother-in-law's death so
he started thinking about how could you actually do man-powered
flight
he said the problem is
we don't understand what the problem is really good people
have been failing for 40 years so this must be hard
so his idea was forget
about man-powered flight first
thing we have to do is to try and understand what the problem
is you look to see what does why aren't
these people doing this so what happened is people were building very
elaborate complex designs
for man-powered flight and they would take it up and they'd
have a crash it would take them a year to rebuild the thing
so they're getting like one flight every 8 to 14
months and Paul said well we need
to we need to be able to do 12 crashes a day
so his first design was this
contraption here that was literally made out
of baling wire and some plastic tarps
and some aluminum struts
and stuff but you could fix it in a
few minutes so in just a few months
he had flown more had more flights and more crashes
all the rest of the people in this prize put together
they started
getting an idea of what the problem actually was
and
less than six months after Paul took
that drive across the Arizona desert with his family they
won the Cramer prize it was easy
just easy
and
much more impressive than that
was the second Kramer prize which
is flying from London to across
the English Channel and he won that a year later
one of the most thrilling videos you
ever see is called the gossamer albatross you
can order it every child should see it
it's one of the great romantic videos
of our time it's done beautifully
but so this was a
mile-and-a-half on land and this was 22
miles over water
and when asked about it
Paul said well everybody else was
trying to make an airplane
he
said we were trying to do a human
powered flight so
he didn't start off with an airplane as the idea and
started off with the fact that we had a third of a horsepower
at max to
run this thing and we had to do this and that and the
other thing we had to find out what that meant and that wound up
extremely different than all of the other things and
bingo let's
take a look at one
way of looking at this
so here's the effort and
we can think of reward going
up that way and there's
kind of a threshold there
so here's what tenure committees
and NSF loves
they love problems you can do and
you know what they don't care whether the problems are worthwhile or not
because Congress doesn't give a damn and can't
understand the difference between any and Congress oversees NSF
I'm on I can say this because I'm on to several of
the NSF advisory committees but basically if
you want to get an NSF grant you
don't write it for science you write it as an engineering project here is
how we're going to do it here's where we're going to be successful this is
why almost nothing funded by NSF over the last twenty
years has been interesting just hasn't been and
these big inventions that we use today we're not funded
by NSF at all they were funded by our PI
so
the first thing we have to get rid of is this
idea of looking for the keys under the lamppost
which is not where we've lost them
all right
so
you can think of there being a curved
something like this that you put effort
in if you're lucky
it might have a peak like that and
the McCready principle is spend
a lot of time finding
that tiny little place there
it's just above the threshold
of being interesting but
way above the threshold of being interesting so
you're looking for the minimum
thing that you can do that's qualitatively
better and most
good problem solvers are incredible at this they have
a homing instinct McCready would spend a
long time thinking about where he should put 80% of his
effort before he did a darn thing and he
never had a failure and he solved an enormous
number of problems in his lifetime just because he worried about
this because this is where you learn about
what you need to know to do the real deal
and
as soon as you get to that doable thing you've
actually changed this curve and you
brought the thing you wanted to do into
range and all of a sudden you've got
to break through so most of these things are kind of two
stages effects the hardest thing is to get the
funders to pay for that first stage because
it's not cosmic so one of the reasons
AI research has not done very well the last 25
years or so is because the new are
Pro DARPA is not interested in funding actual
progress towards AI they're only interested
in funding the robot combatant of the
future something that nobody knows how
to do but they can sell that to Congress
and nobody can
so
here's a couple of punchlines Susan
Sontag I love this one
all understanding begins with our not accepting
the world as it appears this
is the hardest one this is where
you have to do with this exercise I do
it every day literally not getting
normal considered harmful because
of course we have a zillion mechanisms we don't want
to have to think every time you take a step right
so you can cripple yourself by questioning everything
that you do yet so you but on the other hand every
once in a while you know take
fifteen minutes and instead of doing meditation on a flower
which is also a good thing meditate
on all the assumptions you're making about the
world that you're just taking for granted for efficiency
reasons and try and think of which ones
where the world would be very different if you made different assumptions
the
reason even people who are good at this stuff
have to do it is because we all have the same brains
our brains are defective nature didn't
make those brains for doing great inventions it
made those great brains for survival and coping
so we have to get around our brain
science of course is one of the great ways of getting around human brains that's
what it was designed to do but individually
we have to get around what's wrong with our brains
so it's best if we think of ourselves as
actually being unsane and that we're dynamically
trying to be stable with respect to all
that stuff out there Red Queen said to
Alex to Alice try to understand three
impossible things before breakfast
we have a blind spot in our
eye which if I had many
audiences I do this with I get prove this to the audience
by having them do the experiment where
a dot this big on the paper will
before your eyes and be filled in by your brain
by material gathered from the surrounding stuff
because there's big area in our retina that just doesn't have
any optical
neurons and
it's
the realization that we have that blind spot in our brain is
filling in that helps us be saner
and I guess the one
to leave you with is this idea that if you realize you're in
the pink plane then you have a chance of escaping
it but if you think the pink plane is all there is there
will be no thought of escape because how can you escape all
that there is thank you very much
- any questions
comments yes
well I you
know it's
so you get old they give you
gold medals and the proper response to
getting a gold medal is to thank the funders because
they just gave you gold back before
you turn the gold medal so a good funder
who is willing to back
something without trying to rationalize
it as well as the scientist is going
to do is the most critical
thing in our field because it
takes money like I said in
the old way that Buck Rogers was this guy who lived in
25th century so the old saying was no bucks no Buck
Rogers and so what changed
in the 70s the thing that forces the arc spark to come into
existence was the great ARPA funding of the
60s was put out of business by Congress because of the Vietnam
War it was no longer possible to
do that stuff in universities funded that way so
Taylor decided to take one more shot
at this and convinced Xerox to fund about
two dozen of us to finish
dream of personal computing and pervasive
networks so that's the way that worked and
the funding has not been good since
1980 there's a lot
of money out there but the money is tied to
the perceptions of the funders as to whether you're doing something
worthwhile or not and that is missing the point
the real way ARPA did it was to
say hey we're willing to tolerate 60%
failure if everybody is working on
really important stuff because that 40% is going to
change the world so this is a baseball model
we're not going to fire you if you don't bat a thousand
now if you bat
368 like Ty Cobb did that's good
so that's the way they did it and back
in the Cold War Congress didn't over over C
ARPA the way they do now is the Vietnam
changed every and not
for the better their so that's the simplest explanation and
what but once this thing winds down
getting all of these factors that I was showing it's our tendency
comfortable it's
our tendency to say hey if
I can buy a compiler I'm
not going to make one even though that compiler might
back some thinking I need to do about programming languages because
compiler I get I'm only going to compile the thing kinds of
willing to compile it already has a conception of
what it's trying to do and that's going to
tie me to past conceptions and I might have a good
idea so Park literally built
every bit in every atom of
all of its computing machinery
build all the hardware and all the software and it wasn't
you know it was a lot of work but we realized
it was we thought it would be a better trade off if we could pull