Can we build AI without losing control over it?

I'm going to talk about
a failure of intuition

that many of us suffer from.

It's really a failure to detect
a certain kind of danger.

I'm going to describe a scenario

that I think is both terrifying

and likely to occur,

and that's not a good combination,

as it turns out.

And yet rather than be scared,
most of you will feel

that what I'm talking about
is kind of cool.

I'm going to describe how
the gains we make

in artificial intelligence

could ultimately destroy us.

And in fact, I think it's very difficult
to see how they won't destroy us

or inspire us to destroy ourselves.

And yet if you're anything like me,

you'll find that it's fun
to think about these things.

And that response is part of the problem.

Okay? That response should worry you.

And if I were to convince you in this talk

that we were likely to suffer
a global famine,

either because of climate change
or some other catastrophe,

and that your grandchildren,
or their grandchildren,

are very likely to live like this,

you wouldn't think,

"Interesting.

I like this TEDTalk."

Famine isn't fun.

Death by science fiction,
on the other hand, is fun,

and one of the things that worries me most
about the development of AI at this point

is that we seem unable to marshal

an appropriate emotional response

to the dangers that lie ahead.

I am unable to marshal this response,
and I'm giving this talk.

It's as though we stand before two doors.

Behind door number one,

we stop making progress
in building intelligent machines.

Our computer hardware and software
just stops getting better for some reason.

Now take a moment to consider

why this might happen.

I mean, given how valuable
intelligence and automation are,

we will continue to improve our technology
if we are at all able to.

What could stop us from doing this?

A full-scale nuclear war?

A global pandemic?

An asteroid impact?

Justin Bieber becoming
President of the United States?

(Laughter)

The point is, something would have
to destroy civilization as we know it.

You have to imagine
how bad it would have to be

to prevent us from making
improvements in our technology

permanently,

generation after generation.

Almost by definition, this is
the worst thing that's ever happened

in human history.

So the only alternative,

and this is what lies behind
door number two,

is that we continued to improve
our intelligent machines

year after year after year.

At a certain point, we will build
machines that are smarter than we are,

and once we have machines
that are smarter than we are,

they will begin to improve themselves.

And then we risk what
the mathematician IJ Good called

an "intelligence explosion,"

that the process could get away from us.

Now this is often caricatured,
as I have here,

as a fear that armies of malicious robots

will attack us.

But that isn't the most likely scenario.

It's not that our machines
will become spontaneously malevolent.

The concern is really that we will build
machines that are so much

more competent than we are

that the slightest divergence
between their goals and our own

could destroy us.

Just think about how we relate to ants.

We don't hate them.

We don't go out of our way to harm them.

In fact, sometimes we take pains
not to harm them.

We step over them on the sidewalk.

But whenever their presence

seriously conflicts
with one of our goals,

let's say when constructing
a building like this one,

we annihilate them without a qualm.

The concern is that we
will one day build machines

that, whether they're conscious or not,

could treat us with similar disregard.

Now, I suspect this seems
farfetched to many of you.

I bet there are those of you who doubt
that superintelligent AI is possible,

much less inevitable.

But then you must find something wrong
with one of the following assumptions.

And there are only three of them.

Intelligence is a matter of information
processing in physical systems.

Actually, this is a little bit more
than an assumption.

We have already built narrow intelligence
into our machines,

and many of these machines perform

at a level of superhuman
intelligence already.

And we know that mere matter

can give rise to what is called
"general intelligence,"

an ability to think flexibly
across multiple domains,

because our brains have managed it. Right?

There's just atoms in here,

and as long as we continue to

build systems of atoms

that display more and more
intelligent behavior,

we will eventually,

unless we are interrupted, we will
eventually build general intelligence

into our machines.

It's crucial to realize that
the rate of progress doesn't matter,

because any progress is enough
to get us into the end zone.

We don't need Moore's Law to continue.
We don't need exponential progress.

We just need to keep going.

The second assumption
is that we will keep going.

We will continue to improve
our intelligent machines.

And given the value of intelligence,

I mean, intelligence is either
the source of everything we value

or we need it to safeguard
everything we value.

It is our most valuable resource.

So we want to do this.

We have problems that we
desperately need to solve.

We want to cure diseases
like Alzheimer's and cancer.

We want to understand economic systems.
We want to improve our climate science.

So we will do this, if we can.

The train is already out of the station,
and there's no brake to pull.

Finally, we don't stand on a peak
of intelligence,

or anywhere near it, likely.

And this really is the crucial insight.

This is what makes our situation
so precarious,

and this is what makes our intuitions
about risk so unreliable.

Now, just consider the smartest person
who has ever lived.

On almost everyone's shortlist here
is John Von Neumann.

I mean, the impression that Von Neumann
made on the people around him,

and this included the greatest
mathematicians and physicists of his time,

is fairly well documented.

If only half the stories about him
are half true,

there's no question he is one of
the smartest people who has ever lived.

So consider the spectrum of intelligence.

We have John Von Neumann.

And then we have you and me.

And then we have a chicken.

(Laughter)

Sorry, a chicken.

(Laughter)

There's no reason for me to make this talk
more depressing than it needs to be.

(Laughter)

It seems overwhelmingly, however,
that the spectrum of intelligence

extends much further
than we current conceive,

and if we build machines
that are more intelligent than we are,

they will very likely
explore this spectrum

in ways that we can't imagine,

and exceed us in ways
that we can't imagine.

And it's important to recognize that this
is true by virtue of speed alone.

Right? So imagine if we just built
a super-intelligent AI, right,

that was no smarter than
your average team of researchers

at Stanford or at MIT.

Well, electronic circuits function
about a million times faster

than biochemical ones,

so this machine should think
about a million times faster

than the minds that built it.

So you set it running for a week,

and it will perform 20,000 years
of human-level intellectual work,

week after week after week.

How could we even understand,
much less constrain,

a mind making this sort of progress?

The other thing that's worrying, frankly,

is that, imagine the best case scenario.

So imagine we hit upon a design
of super-intelligent AI

that has no safety concerns.

We have the perfect design
the first time around.

It's as though we've been handed an oracle

that behaves exactly as intended.

Well, this machine would be
the perfect labor-saving device.

It can design the machine
that can build the machine

that can do any physical work,

powered by sunlight,

more or less for the cost
of raw materials.

So we're talking about
the end of human drudgery.

We're also talking about the end
of most intellectual work.

So what would apes like ourselves
do in this circumstance?

Well, we'd be free to play frisbee
and give each other massages.

Add some LSD and some
questionable wardrobe choices,

and the whole world
could be like Burning Man.

(Laughter)

Now, that might sound pretty good,

but ask yourself what would happen

under our current economic
and political order?

It seems likely that we would witness
a level of wealth inequality

and unemployment
that we have never seen before.

Absent a willingness to immediately
put this new wealth

to the service of all humanity,

a few trillionaires could grace
the covers of our business magazines

while the rest of the world
would be free to starve.

And what would the Russians
or the Chinese do

if they heard that some company
in Silicon Valley

was about to deploy
a super-intelligent AI?

This machine would be capable
of waging war,

whether terrestrial or cyber,

with unprecedented power.

This is a winner-take-all scenario.

To be six months ahead
of the competition here

is to be 500,000 years ahead,
at a minimum.

So even mere rumors
of this kind of breakthrough

could cause our species to go berserk.

Now, one of the most frightening things,

in my view, at this moment,

are the kinds of things

that AI researchers say

when they want to be reassuring.

And the most common reason
we're told not to worry is time.

This is all a long way off,
don't you know.

This is probably 50 or 100 years away.

One researcher has said,

"Worrying about AI safety

is like worrying about
overpopulation on Mars."

This is the Silicon Valley version of

"don't worry your
pretty little head about it."

(Laughter)

No one seems to notice

that referencing the time horizon

is a total non sequitur.

If intelligence is just a matter
of information processing,

and we continue to improve our machines,

we will improve some form
of super-intelligence.

And we have no idea

how long it will take us

to create the conditions
to do that safely.

Let me say that again.

And we have no idea
how long it will take us

to create the conditions
to do that safely.

And if you haven't noticed,

50 years is not what it used to be.

This is 50 years in months.

This is how long we've had the iPhone.

This is how long "The Simpsons"
has been on television.

Fifty years is not that much time

to meet one of the greatest challenges
our species will ever face.

Once again, we seem to be failing
to have an appropriate emotional response

to what we have every reason
to believe is coming.

The computer scientist Stuart Russell
has a nice analogy here.

He said, imagine that we received
a message from an alien civilization,

which read:

"People of Earth,

we will arrive on your planet in 50 years.

Get ready."

And now we're just counting down
the months until the mothership lands.

We would feel a little
more urgency than we do.

Another reason we're told not to worry

is that these machines can't help
but share our values

because they will be literally
extensions of ourselves.

They'll be grafted onto our brains,

and we'll essentially become
their limbic systems.

Now take a moment to consider that the
safest and only prudent path forward,

recommended,

is to implant this technology
directly into our brains.

Now, this may in fact be the safest
and only prudent path forward,

but usually one's safety concerns
about a technology

have to be pretty much worked out
before you stick it inside your head.

(Laughter)

The deeper problem is that

building super-intelligent AI on its own

seems likely to be easier

than building super-intelligent AI

and having the completed neuroscience
that allows us to seamlessly

integrate our minds with it.

And given that the companies
and governments doing this work

are likely to perceive themselves
as being in a race against all others,

given that to win this race
is to win the world,

provided you don't destroy it
in the next moment,

then it seems likely
that whatever is easier to do

will get done first.

Now, unfortunately, I don't have
a solution to this problem,

apart from recommending
that more of us think about it.

I think we need something like
a Manhattan Project

on the topic of artificial intelligence.

Not to build it, because I think
we'll inevitably do that,

but to understand how to avoid
an arms race and to build it

in a way that is aligned
with our interests.

When you're talking about
super-intelligent AI

that can make changes to itself,

it seems that we only have one chance
to get the initial conditions right,

and even then we will need
to absorb the economic

and political consequences
of getting them right.

But the moment we admit

that information processing
is the source of intelligence,

that some appropriate computational system
is what the basis of intelligence is,

and we admit that we will improve
these systems continuously,

and we admit that the horizon
of cognition very likely far exceeds

what we currently know,

then we have to admit that we
are in the process of building

some sort of god.

Now would be a good time

to make sure it's a god we can live with.

Thank you very much.

(Applause)