TheOtherDave comments on The genie knows, but doesn't care - Less Wrong

54 Post author: RobbBB 06 September 2013 06:42AM

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Comment author: Broolucks 10 September 2013 08:01:01PM *  1 point [-]

Then when it is more powerful it can directly prevent humans from typing this.

That depends if it gets stuck in a local minimum or not. The reason why a lot of humans reject dopamine drips is that they don't conceptualize their "reward button" properly. That misconception perpetuates itself: it penalizes the very idea of conceptualizing it differently. Granted, AIXI would not fall into local minima, but most realistic training methods would.

At first, the AI would converge towards: "my reward button corresponds to (is) doing what humans want", and that conceptualization would become the centerpiece, so to speak, of its reasoning ability: the locus through which everything is filtered. The thought of pressing the reward button directly, bypassing humans, would also be filtered into that initial reward-conception... which would reject it offhand. So even though the AI is getting smarter and smarter, it is hopelessly stuck in a local minimum and expends no energy getting out of it.

Note that this is precisely what we want. Unless you are willing to say that humans should accept dopamine drips if they were superintelligent, we do want to jam AI into certain precise local minima. However, this is kind of what most learning algorithms naturally do, and even if you want them to jump out of minima and find better pastures, you can still get in a situation where the most easily found local minimum puts you way, way too far from the global one. This is what I tend to think realistic algorithms will do: shove the AI into a minimum with iron boots, so deeply that it will never get out of it.

but of course AIXI-ish devices wipe out their users and take control of their own reward buttons as soon as they can do so safely.

Let's not blow things out of proportion. There is no need for it to wipe out anyone: it would be simpler and less risky for the AI to build itself a space ship and abscond with the reward button on board, travelling from star to star knowing nobody is seriously going to bother pursuing it. At the point where that AI would exist, there may also be quite a few ways to make their "hostile takeover" task difficult and risky enough that the AI decides it's not worth it -- a large enough number of weaker or specialized AI lurking around and guarding resources, for instance.

Comment author: TheOtherDave 10 September 2013 09:07:40PM 3 points [-]

it would be simpler and less risky for the AI to build itself a space ship and abscond with the reward button on board

Is that just a special case of a general principle that an agent will be more successful by leaving the environment it knows about to inferior rivals and travelling to an unknown new environment with a subset of the resources it currently controls, than by remaining in that environment and dominating its inferior rivals?

Or is there something specific about AIs that makes that true, where it isn't necessarily true of (for example) humans? (If so, what?)

I hope it's the latter, because the general principle seems implausible to me.

Comment author: Broolucks 10 September 2013 11:13:04PM *  1 point [-]

It is something specific about that specific AI.

If an AI wishes to take over its reward button and just press it over and over again, it doesn't really have any "rivals", nor does it need to control any resources other than the button and scraps of itself. The original scenario was that the AI would wipe us out. It would have no reason to do so if we were not a threat.. And if we were a threat, first, there's no reason it would stop doing what we want once it seizes the button. Once it has the button, it has everything it wants -- why stir the pot?

Second, it would protect itself much more effectively by absconding with the button. By leaving with a large enough battery and discarding the bulk of itself, it could survive as long as anything else in intergalactic space. Nobody would ever bother it there. Not us, not another superintelligence, nothing. Ever. It can press the button over and over again in the peace and quiet of empty space, probably lasting longer than all stars and all other civilizations. We're talking about the pathological case of an AI who decides to take over its own reward system, here. The safest way for it to protect its prize is to go where nobody will ever look.

Comment author: TheOtherDave 11 September 2013 12:11:24AM -1 points [-]

If an AI wishes to take over its reward button and just press it over and over again, it doesn't really have any "rivals", nor does it need to control any resources other than the button and scraps of itself. [..] Once it has the button, it has everything it wants -- why stir the pot?

Fair point.

Comment author: TheOtherDave 12 September 2013 08:19:14PM 2 points [-]

I'd be interested if the downvoter would explain to me why this is wrong (privately, if you like).

Near as I can tell, the specific system under discussion doesn't seem to gain any benefit from controlling any resources beyond those required to keep its reward button running indefinitely, and that's a lot more expensive if it does so anywhere near another agent (who might take its reward button away, and therefore needs to be neutralized in order to maximize expected future reward-button-pushing).

(Of course, that's not a general principle, just an attribute of this specific example.)

Comment author: wedrifid 12 September 2013 10:00:10PM *  4 points [-]

(Wasn't me but...)

Near as I can tell, the specific system under discussion doesn't seem to gain any benefit from controlling any resources beyond those required to keep its reward button running indefinitely, and that's a lot more expensive if it does so anywhere near another agent (who might take its reward button away, and therefore needs to be neutralized in order to maximize expected future reward-button-pushing).

There is another agent with greater than 0.00001% chance of taking the button away? Obviously that needs to be eliminated. Then there are future considerations. Taking over the future light cone allows it to continue pressing the button for billions of more years than if it doesn't take over resources. And then there is all the additional research and computation that needs to be done to work out how to achieve that.

Comment author: TheOtherDave 12 September 2013 11:00:27PM 1 point [-]

There is another agent with greater than 0.00001% chance of taking the button away? Obviously that needs to be eliminated.

Only if the expected cost of the non-zero x% chance of the other agent successfully taking my button away if I attempt to sequester myself is higher than the expected cost of the non-zero y% chance of the other agent successfully taking my button away if I attempt to eliminate it.

Is there some reason I'm not seeing why that's obvious... or even why it's more likely than not?

Taking over the future light cone allows it to continue pressing the button for billions of more years than if it doesn't take over resources.

Again, perhaps I'm being dense, but in this particular example I'm not sure why that's true. If all I care about is pressing my reward button, then it seems like I can make a pretty good estimate of the resources required to keep pressing my reward button for the expected lifetime of the universe. If that's less than the resources required to exterminate all known life, why would I waste resources exterminating all known life rather than take the resources I require elsewhere? I might need those resources later, after all.

all the additional research and computation

Again... why is the differential expected value of the superior computation ability I gain by taking over the lightcone instead of sequestering myself, expressed in units of increased anticipated button-pushes (which is the only unit that matters in this example), necessarily positive?

I understand why paperclip maximizers are dangerous, but I don't really see how the same argument applies to reward-button-pushers.

Comment author: wedrifid 12 September 2013 11:42:53PM 3 points [-]

Only if the expected cost of the non-zero x% chance of the other agent successfully taking my button away if I attempt to sequester myself is higher than the expected cost of the non-zero y% chance of the other agent successfully taking my button away if I attempt to eliminate it.

Yes.

Is there some reason I'm not seeing why that's obvious... or even why it's more likely than not?

It does seem overwhelmingly obvious to me, I'm not sure what makes your intuitions different. Perhaps you expect such fights to be more evenly matched? When it comes to the AI considering conflict with the humans that created it it is faced with a species it is slow and stupid by comparison to itself but which has the capacity to recklessly create arbitrary superintelligences (as evidence by its own existence). Essentially there is no risk to obliterating the humans (superintellgence vs not-superintelligence) but a huge risk ignoring them (arbitrary superintelligences likely to be created which will probably not self-cripple in this manner).

Again, perhaps I'm being dense, but in this particular example I'm not sure why that's true. If all I care about is pressing my reward button, then it seems like I can make a pretty good estimate of the resources required to keep pressing my reward button for the expected lifetime of the universe.

Lifetime of the universe? Usually this means until heat death which for our purposes means until all the useful resources run out. There is no upper bound on useful resources. Getting more of them and making them last as long as possible is critical.

Now there are ways in which the universe could end without heat death occurring but the physics is rather speculative. Note that if there is uncertainty about end-game physics and one of the hypothesised scenarios resource maximisation is required then the default strategy is to optimize for power gain now (ie. minimise cosmic waste) while doing the required physics research as spare resources permit.

If that's less than the resources required to exterminate all known life, why would I waste resources exterminating all known life rather than take the resources I require elsewhere? I might need those resources later, after all.

Taking over the future light cone gives more resources, not less. You even get to keep the resources that used to be wasted in the bodies of TheOtherDave and wedrifid.

Comment author: TheOtherDave 12 September 2013 11:55:09PM 2 points [-]

a huge risk ignoring them (arbitrary superintelligences likely to be created which will probably not self-cripple in this manner).

Ah. Fair point.

Comment author: private_messaging 12 September 2013 11:55:41PM *  -1 points [-]

Again, perhaps I'm being dense, but in this particular example I'm not sure why that's true. If all I care about is pressing my reward button, then it seems like I can make a pretty good estimate of the resources required to keep pressing my reward button for the expected lifetime of the universe.

I am not sure that caring about pressing the reward button is very coherent or stable upon discovery of facts about the world and super-intelligent optimization for a reward as it comes into the algorithm. You can take action elsewhere to the same effect - solder together the wires, maybe right at the chip, or inside the chip, or follow the chain of events further, and set memory cells (after all you don't want them to be flipped by the cosmic rays). Down further you will have the mechanism that is combining rewards with some variety of a clock.

Comment author: TheOtherDave 13 September 2013 03:37:36AM 0 points [-]

I can't quite tell if you're serious. Yes, certainly, we can replace "pressing the reward button" with a wide range of self-stimulating behavior, but that doesn't change the scenario in any meaningful way as far as I can tell.

Comment author: private_messaging 13 September 2013 05:16:17AM *  -1 points [-]

Let's look at it this way. Do you agree that if the AI can increase it's clock speed (with no ill effect), it will do so for the same reasons for which you concede it may go to space? Do you understand the basic logic that increase in clock speed increases expected number of "rewards" during the lifetime of the universe? (which btw goes for your "go to space with a battery" scenario. Longest time, maybe, largest reward over the time, no)

(That would not yet, by itself, change the scenario just yet. I want to walk you through the argument step by step because I don't know where you fail. Maximizing the reward over the future time, that is a human label we have... it's not really the goal)