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Re:The Evolutionary Argument Against Reality by tim333 on Sunday May 01, 2016 @07:48PM (#11608395)
> Suppose in reality there’s a resource, like water, and you can quantify how much of it there is in an objective order — very little water, medium amount of water, a lot of water. Now suppose your fitness function is linear, so a little water gives you a little fitness, medium water gives you medium fitness, and lots of water gives you lots of fitness — in that case, the organism that sees the truth about the water in the world can win, but only because the fitness function happens to align with the true structure in reality. Generically, in the real world, that will never be the case. Something much more natural is a bell curve — say, too little water you die of thirst, but too much water you drown, and only somewhere in between is good for survival. Now the fitness function doesn’t match the structure in the real world. And that’s enough to send truth to extinction.

My that seem like BS. I can't quite figure what on earth the argument is supposed to be but too much or too little water being bad for you sending "truth to extinction" just seems nonsense. Maybe it's some kind of late April fools joke?

Re:The Evolutionary Argument Against Reality by empath75 on Sunday May 01, 2016 @07:58PM (#11608445)
Basically if your evolution fitness only depends on perceiving some sensory input that's in a certain range, you're only going to evolve to see that input that falls within that range. You can 'see' only the range of visible light, because that's all that was useful to us when we were evolving. There's everything from microwaves to radio waves that are also floating around, and we can't perceive them at all.

I think if we were utterly reliant on our senses to perceive reality, this would be a good argument in favor of realities ultimate inaccessibility. But we can actually reach beyond our natural senses to see things like microwaves and radiowaves.

The question is now: What else is out there that we haven't been evolved to perceive? In a way, most of the really useful science of the past several centuries have been finding new ways to discover those aspects of reality that are hidden to our primitive primate brains.

The argument he's making isn't about 'philosophical reality' as much as it's about conscious reality.

Re:The Evolutionary Argument Against Reality by Retra on Sunday May 01, 2016 @07:57PM (#11608437)
Here's the argument as far as I can tell:

"Assume your fitness function is correct. Now assume it doesn't match reality. Therefore, your fitness function is incorrect, and thus fitness functions are useless."

Re:The Evolutionary Argument Against Reality by ricknew on Sunday May 01, 2016 @08:09PM (#11608482)
> thus fitness functions are useless."

or perhaps: thus fitness functions should be taken seriously, but not literally?