MrFreeThinker finally showed back up, and left some stupid in his wake. And he did seem to respond when I predicted he wouldn't show up to answer the flood of criticism for his efforts to shift the burden of proof. So, here I go with a main post about an example I gave in the comment thread. Let's get started. Observation: All the crows I have seen so far in my life are black. All the crows I have read about are black. Null hypothesis: There are no non-black crows.
Going by MrFreeThinker's apparent "logic," the burden is on me to prove that non-black crows are "metaphysically" impossible. This would require me to study the crow genome to show that it'd be impossible to get non-black pigments, that albinism is untenable in the species, etcetera. I'd also have to develop perfect knowledge of development to prove that congenital conditions and such can't produce anything other than a black crow. I might also have to cover the bases by somehow proving that crows are immune to bleaching, painting, and dying, er, the application of dye.
Of course, by real world logic, the burden is on MrFreeThinker: If he claims to have seen a white crow, all he needs to do is show it to me under proper observing circumstances.
So, when all the minds I've observed require complex mechanisms to produce their complex behavior, and he says he knows about a mind that doesn't require those systems, it's up to him to demonstrate that it's possible. I don't need to study the whole of philosophy of the mind, neuroscience, and search the entire universe, past, present, and future to fail to observe a simple mind producing complex behavior. He just needs to demonstrate one such entity.
It's the exact same reason we don't believe in psychic powers, Bigfoot, the Loch Ness monster, unicorns, leprechauns, Russel's Teapot, and so on and so forth. It's also why people like me apply our heads to our keyboards whenever someone tries to shift the burden of proof by demanding that we prove their pet woo impossible, instead of just rounding up one solid, verifiable example of it.