No, I did not mean that, unless one finds some good evidence supporting this additional assumption. My point was quite the opposite, that your statement “if something is reproducing the effect of cats on the world we have no reason to posit cats as existing” does not need a qualifier.
Look, if all “cats” are actually magical fairies using their magic to reproduce the effect of cats, yet I find myself as a cat—whose effect on the world consists of a fairy pretending to be me so well even I don’t notice (except just now, obviously.). Thus, for the one epiphenomenal cat I can know about—myself—I am associated with a “cat” that perfectly duplicates my actions. I can’t check if all “cats” have similar cats attached, since they would be epiphenomenal, but it seems likely, based on myself, that there are.
Do you think everyone else is a p-zombie?
Not sure why you bring that silly concept up...
Because the whole point of this cat metaphor was to make a point about p-zombies. That’s what they are. They’re p-zombies for cats instead of qualia.
Because the whole point of this cat metaphor was to make a point about p-zombies. That’s what they are. They’re p-zombies for cats instead of qualia.
Well, the point was to point out that we only think things exist because we experience them, and therefore that anything which duplicates the experience is as real as the original artifact.
Suppose there were to be no cats, but only a magical fairy which knocks things from the mantlepiece and causes us to hallucinate in a consistent manner (among other things). There is no reason to consider that world distinguishable, even in principle, from the standard model.
Now, suppose that you couldn’t see cats, but instead could see the ‘cat fairy’. What is different now, assuming that the cat fairy is working properly and providing identical sensory input as the cats?
There are two differences: the presence of the fairy (which can be observed … somehow) and the possibility of deviating from the mind. P-zombies are described as acting just like humans, but lack consciousness. “Cats” are generally like the human counterparts to p-zombies (who act just the same—by definition—but have epiphenomenal consciousness.)
TL;DR: it’s observable in principle. But I, as author, have decreed that you arn’t getting to check if your friends are cats as well as “cats”.
Y’know, I’m starting to think this may have been a poor example. It’s a little complicated.
If the fairy is observable despite being in principle not observable… I break.
If it is in principle possible to experience differently from what a quantum scan of the brain and body would indicate, but behave in accordance with physicalism … how would you know if what you experienced was different from what you thought you experienced, or if what you thought was different from what you honestly claimed that you thought?
That would seem to be close to several types of abnormal brain function, where a person describes themself as not in control of their body. I think those cases are better explained by abnormal internal brain communication, but further direct evidence may show that the ‘reasoning’ and ‘acting’ portions of some person are connected similarly enough to normal brains that they should be working the same way, but aren’t. If there is a demonstrated case either of a pattern of neurons firing corresponding to similar behavior in all typical brains and a different behavior in a class of brains of people with such abnormal functioning (or in physically similar neurons firing differently under similar stimuli), then I would accept that as evidence that the fairy perceived by those people existed.
If the fairy is observable despite being in principle not observable… I break.
It’s observable. The cats are epiphenomenal, and thus unobservable, except to themselves.
If it is in principle possible to experience differently from what a quantum scan of the brain and body would indicate, but behave in accordance with physicalism … how would you know if what you experienced was different from what you thought you experienced, or if what you thought was different from what you honestly claimed that you thought?
Pardon?
That would seem to be close to several types of abnormal brain function, where a person describes themself as not in control of their body. I think those cases are better explained by abnormal internal brain communication, but further direct evidence may show that the ‘reasoning’ and ‘acting’ portions of some person are connected similarly enough to normal brains that they should be working the same way, but aren’t. If there is a demonstrated case either of a pattern of neurons firing corresponding to similar behavior in all typical brains and a different behavior in a class of brains of people with such abnormal functioning (or in physically similar neurons firing differently under similar stimuli), then I would accept that as evidence that the fairy perceived by those people existed.
Well, if they can tell you what the problem is then they clearly have some control. More to the point, it is a known feature of the environment that all observed cats are actually illusions produced by fairies. It is a fact, although not generally known, that there are also epiphenomenal (although acted upon by the environment) cats; these exist in exactly the same space as the illusions and act exactly the same way. If you are a human, this is all fine and dandy, if bizarre. But if you are a sentient cat (roll with it) then you have evidence of the epiphenomenal cats, even though this evidence is inherently subjective (since presumably the illusions are also seemingly sentient, in this case.)
If it is in principle possible to experience differently from what a quantum scan of the brain and body would indicate, but behave in accordance with physicalism … how would you know if what you experienced was different from what you thought you experienced, or if what you thought was different from what you honestly claimed that you thought?
Pardon?
How could you tell if you were experiencing something differently from the way a p-zombie would (or, if you are a p-zombie, if you were experiencing something differently from the way a human would)?
But if you are a sentient cat (roll with it) then you have evidence of the epiphenomenal cats, even though this evidence is inherently subjective (since presumably the illusions are also seemingly sentient, in this case.)
In every meaningful way, the cat fairy is a cat. There is no way for an epiphenomenal sentient cat to differentiate itself from a cat fairy, nor any way for a cat fairy to differentiate itself from whatever portions of ‘cats’ it controls (without violating the constraints on cat fairy behavior). Of course, there’s also the conceivability of epiphenomenal sentient ghosts which cannot have any effect on the world but still observe. (That’s one of my death nightmares—remaining fully perceptive and cognitive but unable to act in any way.)
You seem to be somewhat confused about the notion of a p-zombie. A p-zombie is something physically identical to a human, but without consciousness. A p-zombie does not experience anything in any way at all. P-zombies are probably self-contradictory.
How could you tell if you were experiencing something differently from the way a p-zombie would (or, if you are a p-zombie, if you were experiencing something differently from the way a human would)?
I am experiencing something, therefore I am not a p-zombie.
Consider the possibility that you are not experiencing everything that humans do. Can you provide any evidence, even to yourself, that you are? Could a p-zombie provide that same evidence?
Are you asking what I would experience? Because I wouldn’t. Not to mention that such a thing can’t happen if, as I expect, subjective experience arises from physics.
i you cannot find any experimental differences betweenn you and a you NOT experiencing
I cannot present you with evidence that I am experiencing, except maybe by analogy with yourself. I, however, know that I experience because I experience it.
How could you tell if you were experiencing something differently from the way a p-zombie would (or, if you are a p-zombie, if you were experiencing something differently from the way a human would)?
Because p-zombies aren’t conscious. By definition.
In every meaningful way, the cat fairy is a cat. There is no way for an epiphenomenal sentient cat to differentiate itself from a cat fairy, nor any way for a cat fairy to differentiate itself from whatever portions of ‘cats’ it controls (without violating the constraints on cat fairy behavior). Of course, there’s also the conceivability of epiphenomenal sentient ghosts which cannot have any effect on the world but still observe. (That’s one of my death nightmares—remaining fully perceptive and cognitive but unable to act in any way.)
Well, the cat does have an associated cat fairy. So, since the only cat fairy who’s e-cat it could observe (its own) has one, I think it should rightly conclude that all cat fairies have cats. But yes, epiphenomenal sentient “ghosts” are possible, and indeed the p-zombie hypothesis requires that the regular humans are in fact such ghosts. They just don’t notice. Yes, there are people arguing this is true in the real world, although not all of them have worked out the implications.
Now conceive of something which is similar to consciousness, but distinct; like consciousness, it has no physical effects on the world, and like consciousness, anyone who has it experiences it in a manner distinct from their physicality. Call this ‘magic’, and people who posses it ‘magi’.
What aspect does magic lack that consciousness has, such that a p-zombie cannot consider if it is conscious, but a human can ask if they are a magi?
Who said consciousness has no effects on the physical world? Apart from those idiots making the p-zombie argument that is. Pretty much everyone here thinks that’s nonsense, including me and, statistically, probably srn347 (although you never know, I guess.)
Regarding your Magi, if it affects their brain, it’s not epiphenomenal. So there’s that.
And the point I am trying to make is that p-zombies are not only a coherent idea, but compatible with human-standard brains as generally modelled on LW. That they don’t in any way demonstrate the point they were intended to make is quite another thing.
And the point I am trying to make is that p-zombies are not only a coherent idea, but compatible with human-standard brains as generally modelled on LW.
Yes, it merely requires redefining things like ‘conscious’ or ‘experience’ (whatever you decide p-zombies do not have) to be something epiphenomenal and incidentally non-existent.
Um, could you please explain this comment? I think there’s a fair chance you’ve stumbled into the middle of this discussion and don’t know what I’m actually talking about (except that it involves p-zombies, I guess.)
I think there’s a fair chance you’ve stumbled into the middle of this discussion and don’t know what I’m actually talking about (except that it involves p-zombies, I guess.)
I know only the words spoken, not those intended. (And concluded early in the conversation that the entire subthread should be truncated and replaced with a link). So much confusion and muddled thinking!)
Seems reasonable. For reference, then, I suggested the analogous thought experiment of fairies using magic to reproduce all the effects of cats on the environment. Also, there are epiphenomenal ghost cats that occupy the same space and are otherwise identical to the fairies’ illusions, down to the subatomic level. An outside observer would, of course, have no reason to postulate these epiphenomenal cats, but if the cats themselves were somehow conscious, they would.
This was intended to help with understanding p-zombies, since it avoids the … confusing … aspects.
Well, I personally find it an interesting concept. It’s basically a reformulation of standard Sequences stuff, though, so it shouldn’t be surprising, at least ’round here.
Look, if all “cats” are actually magical fairies using their magic to reproduce the effect of cats, yet I find myself as a cat—whose effect on the world consists of a fairy pretending to be me so well even I don’t notice (except just now, obviously.). Thus, for the one epiphenomenal cat I can know about—myself—I am associated with a “cat” that perfectly duplicates my actions. I can’t check if all “cats” have similar cats attached, since they would be epiphenomenal, but it seems likely, based on myself, that there are.
Because the whole point of this cat metaphor was to make a point about p-zombies. That’s what they are. They’re p-zombies for cats instead of qualia.
Well, the point was to point out that we only think things exist because we experience them, and therefore that anything which duplicates the experience is as real as the original artifact.
Suppose there were to be no cats, but only a magical fairy which knocks things from the mantlepiece and causes us to hallucinate in a consistent manner (among other things). There is no reason to consider that world distinguishable, even in principle, from the standard model.
Now, suppose that you couldn’t see cats, but instead could see the ‘cat fairy’. What is different now, assuming that the cat fairy is working properly and providing identical sensory input as the cats?
There is no (observable) difference. That’s the point. But presumably someone found a way to check for fairies.
If there is no observable (even in principle) difference, what’s the difference? P-zombies are not intended or described as equivocal to humans.
There are two differences: the presence of the fairy (which can be observed … somehow) and the possibility of deviating from the mind. P-zombies are described as acting just like humans, but lack consciousness. “Cats” are generally like the human counterparts to p-zombies (who act just the same—by definition—but have epiphenomenal consciousness.)
TL;DR: it’s observable in principle. But I, as author, have decreed that you arn’t getting to check if your friends are cats as well as “cats”.
Y’know, I’m starting to think this may have been a poor example. It’s a little complicated.
Complicated isn’t a bad thing;
If the fairy is observable despite being in principle not observable… I break.
If it is in principle possible to experience differently from what a quantum scan of the brain and body would indicate, but behave in accordance with physicalism … how would you know if what you experienced was different from what you thought you experienced, or if what you thought was different from what you honestly claimed that you thought?
That would seem to be close to several types of abnormal brain function, where a person describes themself as not in control of their body. I think those cases are better explained by abnormal internal brain communication, but further direct evidence may show that the ‘reasoning’ and ‘acting’ portions of some person are connected similarly enough to normal brains that they should be working the same way, but aren’t. If there is a demonstrated case either of a pattern of neurons firing corresponding to similar behavior in all typical brains and a different behavior in a class of brains of people with such abnormal functioning (or in physically similar neurons firing differently under similar stimuli), then I would accept that as evidence that the fairy perceived by those people existed.
Well, it’s proving hard to explain.
It’s observable. The cats are epiphenomenal, and thus unobservable, except to themselves.
Pardon?
Well, if they can tell you what the problem is then they clearly have some control. More to the point, it is a known feature of the environment that all observed cats are actually illusions produced by fairies. It is a fact, although not generally known, that there are also epiphenomenal (although acted upon by the environment) cats; these exist in exactly the same space as the illusions and act exactly the same way. If you are a human, this is all fine and dandy, if bizarre. But if you are a sentient cat (roll with it) then you have evidence of the epiphenomenal cats, even though this evidence is inherently subjective (since presumably the illusions are also seemingly sentient, in this case.)
How could you tell if you were experiencing something differently from the way a p-zombie would (or, if you are a p-zombie, if you were experiencing something differently from the way a human would)?
In every meaningful way, the cat fairy is a cat. There is no way for an epiphenomenal sentient cat to differentiate itself from a cat fairy, nor any way for a cat fairy to differentiate itself from whatever portions of ‘cats’ it controls (without violating the constraints on cat fairy behavior). Of course, there’s also the conceivability of epiphenomenal sentient ghosts which cannot have any effect on the world but still observe. (That’s one of my death nightmares—remaining fully perceptive and cognitive but unable to act in any way.)
You seem to be somewhat confused about the notion of a p-zombie. A p-zombie is something physically identical to a human, but without consciousness. A p-zombie does not experience anything in any way at all. P-zombies are probably self-contradictory.
I am experiencing something, therefore I am not a p-zombie.
Consider the possibility that you are not experiencing everything that humans do. Can you provide any evidence, even to yourself, that you are? Could a p-zombie provide that same evidence?
How is this relevant? My point is that I’m experiencing what I’m experiencing.
And p-zombies are experiencing what they’re experiencing. You can’t use a similarity to distinguish.
P-zombies aren’t experiencing anything. By definition.
Those two statements are both tautologically true and do not contradict one another.
What would be different, to you, if you weren’t experiencing anything, but were physically identical?
I wouldn’t be experiencing anything.
I thought it had been established that wasn’t a difference.
Are you asking what I would experience? Because I wouldn’t. Not to mention that such a thing can’t happen if, as I expect, subjective experience arises from physics.
Sorry, I thought you were disagreeing with me.
It is relevant because i you cannot find any experimental differences betweenn you and a you NOT experiencing, then maybe there is no such difference.
I cannot present you with evidence that I am experiencing, except maybe by analogy with yourself. I, however, know that I experience because I experience it.
Because p-zombies aren’t conscious. By definition.
Well, the cat does have an associated cat fairy. So, since the only cat fairy who’s e-cat it could observe (its own) has one, I think it should rightly conclude that all cat fairies have cats. But yes, epiphenomenal sentient “ghosts” are possible, and indeed the p-zombie hypothesis requires that the regular humans are in fact such ghosts. They just don’t notice. Yes, there are people arguing this is true in the real world, although not all of them have worked out the implications.
What would be the subjective difference to you if you weren’t ‘conscious’?
To have a subjective anything, you have to be conscious. By definition, if you consider whether you’re a P-zombie, you’re conscious and hence not one.
Now conceive of something which is similar to consciousness, but distinct; like consciousness, it has no physical effects on the world, and like consciousness, anyone who has it experiences it in a manner distinct from their physicality. Call this ‘magic’, and people who posses it ‘magi’.
What aspect does magic lack that consciousness has, such that a p-zombie cannot consider if it is conscious, but a human can ask if they are a magi?
Who said consciousness has no effects on the physical world? Apart from those idiots making the p-zombie argument that is. Pretty much everyone here thinks that’s nonsense, including me and, statistically, probably srn347 (although you never know, I guess.)
Regarding your Magi, if it affects their brain, it’s not epiphenomenal. So there’s that.
The point I am trying to make is that P-zombies are nonsensical. I’m demonstrating that they are equally sensible as an absurd thing.
And the point I am trying to make is that p-zombies are not only a coherent idea, but compatible with human-standard brains as generally modelled on LW. That they don’t in any way demonstrate the point they were intended to make is quite another thing.
Yes, it merely requires redefining things like ‘conscious’ or ‘experience’ (whatever you decide p-zombies do not have) to be something epiphenomenal and incidentally non-existent.
Um, could you please explain this comment? I think there’s a fair chance you’ve stumbled into the middle of this discussion and don’t know what I’m actually talking about (except that it involves p-zombies, I guess.)
I know only the words spoken, not those intended. (And concluded early in the conversation that the entire subthread should be truncated and replaced with a link). So much confusion and muddled thinking!)
Seems reasonable. For reference, then, I suggested the analogous thought experiment of fairies using magic to reproduce all the effects of cats on the environment. Also, there are epiphenomenal ghost cats that occupy the same space and are otherwise identical to the fairies’ illusions, down to the subatomic level. An outside observer would, of course, have no reason to postulate these epiphenomenal cats, but if the cats themselves were somehow conscious, they would.
This was intended to help with understanding p-zombies, since it avoids the … confusing … aspects.
Like brains and rotting flesh?
Whoops. Changed it to “confusing”.
How is it that something which is physically identical to a human and has a physical difference from a human is a coherent concept?
It’s not. I meant that we can replace the soul or whatever with a neurotypical human brain and still get a coherent thought experiment.
Were you saying that the results of that experiment were completely uninteresting?
Well, I personally find it an interesting concept. It’s basically a reformulation of standard Sequences stuff, though, so it shouldn’t be surprising, at least ’round here.