ricraz

Richard Ngo. I'm an AI safety research engineer at DeepMind (all opinions my own, not theirs). I'm from New Zealand and now based in London; I also did my undergrad and masters degrees in the UK (in Computer Science, Philosophy, and Machine Learning). Blog: thinkingcomplete.blogspot.com

ricraz's Comments

Reply to Paul Christiano's “Inaccessible Information”

"But it seems strange to describe this approach as 'hope you can find some other way to produce powerful AI', as though we know of no other approach to engineering sophisticated systems other than search."

If I had to summarise the history of AI in one sentence, it'd be something like: a bunch of very smart people spent a long time trying to engineer sophisticated systems without using search, and it didn't go very well until they started using very large-scale search.

I'd also point out that the most sophisticated systems we can currently engineer are much complex than brains. So the extent to which this analogy applies seems to me to be fairly limited.

An overview of 11 proposals for building safe advanced AI

"I usually don’t think about outer amplification as what happens with optimal policies"

Do you mean outer alignment?

AGIs as populations

But I can't do the wrong thing, by my standards of value, if my "value system no longer applies". So that's part of what I'm trying to tease out.

Another part is: I'm not sure if Wei thinks this is just a governance problem (i.e. we're going to put people in charge who do the wrong thing, despite some people advocating caution) or a more fundamental problem that nobody would do the right thing.

If the former, then I'd characterise this more as "more power magnifies leadership problems". But maybe it won't, because there's also a much larger space of morally acceptable things you can do. It just doesn't seem that easy to me to accidentally do a moral catastrophe if you've got a huge amount of power, and less so an irreversible one. But maybe this is just because I don't know of whatever possible examples Wei thinks about.

AGIs as populations

My thoughts on each of these. The common thread is that it seems to me you're using abstractions at way too high a level to be confident that they will actually apply, or that they even make sense in those contexts.

AGIs and economies of scale

  • Do we expect AGIs to be so competitive that reducing coordination costs is a big deal? I expect that the dominant factor will be AGI intelligence, which will vary enough that changes in coordination costs aren't a big deal. Variations in human intelligence have a huge effect, and presumably variations in AGI intelligence will be much bigger.
  • There's an obvious objection to giving one AGI all of your resources, which is "how do you know it's aligned"? And this seems like an issue where there'd be unified dissent from people worried about both short-term and long-term safety.
  • Oh, another concern: if they're all intent aligned to the same person, then this amounts to declaring that person dictator. Which is often quite a difficult thing to convince people to do.
  • Consider also that we'll be in an age of unprecedented plenty, once we have aligned AGIs that can do things for us. So I don't see why economic competition will be very strong. Perhaps military competition will be strong, but will countries really be converting so much of their economy to military spending that they need this edge to keep up?

So this seems possible, but very far from a coherent picture in my mind.

Some thoughts on metaphilosophy

  • These are a bunch of fun analogies here. But it is very unclear to me what you mean by "philosophy" here, since most, or perhaps all, of your descriptions would be equally applicable to "thinking" or "reasoning". The model you give of philosophy is also a model of choosing the next move in the game of chess, and countless other things.
  • Similarly, what is metaphilosophy, and what would it mean to solve it? Reach a dead end? Be able to answer any question? Why should we think that the concept of a "solution" to metaphilosophy makes any sense?

Overall, this posts feels like it's pointing at something interesting but I don't know if it actually communicated any content to me. Like, is the point of the sections headed "Philosophy as interminable debate" and "Philosophy as Jürgen Schmidhuber's General TM" just to say that we can never be certain of any proposition? As written, the post is consistent both with you having some deep understanding of metaphilosophy that I just am not comprehending, and also with you using this word in a nonsensical way.

Two Neglected Problems in Human-AI Safety

  • "There seems to be no reason not to expect that human value functions have similar problems, which even "aligned" AIs could trigger unless they are somehow designed not to." There are plenty of reasons to think that we don't have similar problems - for instance, we're much smarter than the ML systems on which we've seen adversarial examples. Also, there are lots of us, and we keep each other in check.
  • "For example, such AIs could give humans so much power so quickly or put them in such novel situations that their moral development can't keep up, and their value systems no longer apply or give essentially random answers." What does this actually look like? Suppose I'm made the absolute ruler of a whole virtual universe - that's a lot of power. How might my value system "not keep up"?
  • The second half of this post makes a lot of sense to me, in large part because you can replace "corrupt human values" with "manipulate people", and then it's very analogous to problems we face today. Even so, a *lot* of additional work would need to be done to make a plausible case that this is an existential risk.
  • "An objective that is easy to test/measure (just check if the target has accepted the values you're trying to instill, or has started doing things that are more beneficial to you)". Since when was it easy to "just check" someone's values? Like, are you thinking of an AI reading them off our neurons?

Here's a slightly stretched analogy to try and explain my overall perspective. If you talked to someone born a thousand years ago about the future, they might make claims like "the most important thing is making process on metatheology" or "corruption of our honour is an existential risk", or "once instantaneous communication exists then economies of scale will be so great that countries will be forced to nationalise all their resources". How do we distinguish our own position from theirs? The only way is to describe our own concepts at a level of clarity and detail that they just couldn't have managed. So what I want is a description of what "metaphilosophy" is such that it would have been impossible to give an equally clear description of "metatheology" without realising that this concept is not useful or coherent. Maybe that's too high a target, but I think it's one we should keep in mind as what is *actually necessary* to reason at such an abstract level without getting into confusion.

Speculations on the Future of Fiction Writing

Only tangentially related:

I should totally have expected this, but boy are film budgets heavy-tailed. According to your link, Terminator 3 spent $35 million on its cast, which consisted of:

  • Arnold Schwarzenegger: $29.25 million + 20% gross profits
  • Arnold's perks: $1.5 million
  • Rest of principal cast: $3.85 million
  • Extras: $450,000

Arnold's perks alone might have cost more than any other actor on set... (although it's not subdivided finely enough to know for sure).

AGIs as populations

What do you mean by "hard to resolve to convo with Richard"? I can't parse that grammar.

I didn't downvote those comments, but if you interpret me as saying "More rigour for important arguments please", and Wei as saying "I'm too lazy to provide this rigour", then I can see why someone might have downvoted them.

Like, on one level I'm fine with Wei having different epistemic standards to me, and I appreciate his engagement. And I definitely don't intend my arguments as attacks on Wei specifically, since he puts much more effort into making intellectual progress than almost anyone on this site.

But on another level, the whole point of this site is to have higher epistemic standards, and (I would argue) the main thing preventing that is just people being so happy to accept blog-post-sized insights without further scrutiny.

AGIs as populations

As opposed to coming up with powerful and predictive concepts, and refining them over time. Of course argument and counterargument are crucial to that, so there's no sharp line between this and "patching", but for me the difference is: are you starting with the assumption that the idea is fundamentally sound, and you just need to fix it up a bit to address objections? If you are in that position despite not having fleshed out the idea very much, that's what I'd characterise as "patching your way to good arguments".

AGIs as populations

Mostly "Wei Dai should write a blogpost that more clearly passes your "sniff test" of "probably compelling enough to be worth more of my attention"". And ideally a whole sequence or a paper.

It's possible that Wei has already done this, and that I just haven't noticed. But I had a quick look at a few of the blog posts linked in the "Disjunctive scenarios" post, and they seem to overall be pretty short and non-concrete, even for blog posts. Also, there are literally thirty items on the list, which makes it hard to know where to start (and also suggests low average quality of items). Hence why I'm asking Wei for one which is unusually worth engaging with; if I'm positively surprised, I'll probably ask for another.

AGIs as populations
Many of my "disjunctive" arguments were written specifically with that scenario in mind.

Cool, makes sense. I retract my pointed questions.

I guess I have a high prior that making something smarter than human is dangerous unless we know exactly what we're doing including the social/political aspects, and you don't, so you think the burden of proof is on me?

This seems about right. In general when someone proposes a mechanism by which the world might end, I think the burden of proof is on them. You're not just claiming "dangerous", you're claiming something like "more dangerous than anything else has ever been, even if it's intent-aligned". This is an incredibly bold claim and requires correspondingly thorough support.

does the current COVID-19 disaster not make you more pessimistic about "whatever efforts people will make when the problem starts becoming more apparent"?

Actually, COVID makes me a little more optimistic. First because quite a few countries are handling it well. Secondly because I wasn't even sure that lockdowns were a tool in the arsenal of democracies, and it seemed pretty wild to shut the economy down for so long. But they did. Also essential services have proven much more robust than I'd expected (I thought there would be food shortages, etc).

AGIs as populations

I'm pretty skeptical of this as a way of making progress. It's not that I already have strong disagreements with your arguments. But rather, if you haven't yet explained them thoroughly, I expect them to be underspecified, and use some words and concepts that are wrong in hard-to-see ways. One way this might happen is if those arguments use concepts (like "metaphilosophy") that kinda intuitively seem like they're pointing at something, but come with a bunch of connotations and underlying assumptions that make actually understanding them very tricky.

So my expectation for what happens here is: I look at one of your arguments, formulate some objection X, and then you say either: "No, that wasn't what I was claiming", or "Actually, ~X is one of the implicit premises", or "Your objection doesn't make any sense in the framework I'm outlining" and then we repeat this a dozen or more times. I recently went through this process with Rohin, and it took a huge amount of time and effort (both here and in private conversation) to get anywhere near agreement, despite our views on AI being much more similar than yours and mine.

And even then, you'll only have fixed the problems I'm able to spot, and not all the others. In other words, I think of patching your way to good arguments as kinda like patching your way to safe AGI. (To be clear, none of this is meant as specific criticism of your arguments, but rather as general comments about any large-scale arguments using novel concepts that haven't been made very thoroughly and carefully).

Having said this, I'm open to trying it for one of your arguments. So perhaps you can point me to one that you particularly want engagement on?

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