The fourth horn of the anthropic trilemma is to deny that increasing the number of physical copies increases the weight of an experience, which leads into Boltzmann brain problems, and may not help much (because alternatively designed brains may be able to diverge and then converge as different experiences have their details forgotten).
Suppose I build a (conscious) brain in hardware using today’s technology. It uses a very low current density, to avoid electromigration.
Suppose I build two of them, and we agree that both of them experience consciousness.
Then I learn a technique for treating the wafers to minimize electromigration. I create a new copy of the brain, the same as the first copy, only using twice the current, and hence being implemented by a flow of twice as many electrons.
As far as the circuits and the electrons travelling them are concerned, running it is very much like running the original 2 brains physically right next to each other in space.
So, does the new high-current brain have twice as much conscious experience?
I’m not as versed in this trilemma as I’d like to be, so I’m not sure whether that final question is rhetorical or not, though I suspect that it is. So mostly for my own benefit:
While there’s no denying that subjective experience is ‘a thing’, I see no reason to make that abstraction obey rules like multiplication. The aeroplane exists at a number of levels of abstraction above the atoms it’s composed of, but we still find it a useful abstraction. The ‘subjective experiencer’ is many, many levels higher again, which is why we find it so difficult to talk about. Twice as many atoms doesn’t make twice as much aeroplane, the very concept is nonsense. Why would we think any differently about the conscious self?
My response to the ‘trilemma’ is as it was when I first read the post—any sensible answer isn’t going to look like any of those three, it’s going to require rewinding back past the ‘subjective experience’ concept and doing some serious reduction work. ‘Is there twice as much experience?’ and ‘are you the same person?’ just smell like such wrong questions to me. Anyone else?
Nick, will have a look at that Bostrom piece, cheers.
Nick Bostrom’s “Quantity of Experience” discusses similar issues. His model would, I think, answer “no”, since the structure of counterfactual dependences is unchanged.
From EY’s post:
Suppose I build a (conscious) brain in hardware using today’s technology. It uses a very low current density, to avoid electromigration.
Suppose I build two of them, and we agree that both of them experience consciousness.
Then I learn a technique for treating the wafers to minimize electromigration. I create a new copy of the brain, the same as the first copy, only using twice the current, and hence being implemented by a flow of twice as many electrons.
As far as the circuits and the electrons travelling them are concerned, running it is very much like running the original 2 brains physically right next to each other in space.
So, does the new high-current brain have twice as much conscious experience?
I’m not as versed in this trilemma as I’d like to be, so I’m not sure whether that final question is rhetorical or not, though I suspect that it is. So mostly for my own benefit:
While there’s no denying that subjective experience is ‘a thing’, I see no reason to make that abstraction obey rules like multiplication. The aeroplane exists at a number of levels of abstraction above the atoms it’s composed of, but we still find it a useful abstraction. The ‘subjective experiencer’ is many, many levels higher again, which is why we find it so difficult to talk about. Twice as many atoms doesn’t make twice as much aeroplane, the very concept is nonsense. Why would we think any differently about the conscious self?
My response to the ‘trilemma’ is as it was when I first read the post—any sensible answer isn’t going to look like any of those three, it’s going to require rewinding back past the ‘subjective experience’ concept and doing some serious reduction work. ‘Is there twice as much experience?’ and ‘are you the same person?’ just smell like such wrong questions to me. Anyone else?
Nick, will have a look at that Bostrom piece, cheers.
Nick Bostrom’s “Quantity of Experience” discusses similar issues. His model would, I think, answer “no”, since the structure of counterfactual dependences is unchanged.