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MarsColony_in10years comments on GAZP vs. GLUT - Less Wrong

33 Post author: Eliezer_Yudkowsky 07 April 2008 01:51AM

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Comment author: MarsColony_in10years 25 March 2015 04:52:03AM *  0 points [-]

Ah, so you were talking about the possible mismatch between our perceptions of the redness of red. I could try to guess at a technical answer, since it would be highly immoral to experiment with actual people. I'm not sure it would make any difference to the consciousness argument, though.

It sounds like you do experience some sort of sensation of existing, but that you don't talk about this sensation with words like "consciousness", or anything else, because you can't draw a logical link between different people's consciousnesses to show that they are the same thing.

But I'm not talking about formal logic. I'd agree with you that given what we know, we can't deduce that everyone is talking about the same "consciousness". However, we have tools in our bag besides just formal logic. One such tool is Bayes' theorem. Do you really prescribe less than a 50% probability to the hypothesis that our ideas of "consciousness" are similar, rather than entirely random things? Maybe it isn't above a 95% certainty, or 99.9%, or whatever arbitrary threshold you would choose before you can safely say that you "know" something.

Personally, I would assign a low probability to the idea that our consciousnesses are identical, but a quite high probability to the idea that they are at least similar in nature. People seem to talk about consciousness in much different ways than they talk about potatoes or space-time. There are enough differences in the rest of our brains that I would be surprised if consciousnesses were identical, but there are still patterns that are similar between most human brains. It strikes me as an unsolved but bounded question, rather than an unknowable one.