What is so mysterious about human consciousness?

[napoleon_in_rags]

7. Here is what's so mysterious about it:

Thought experiment - Doctor Futuro has a magic machine, that can perform both teleportation, and the making of a perfect copy of anything instantly from base elements. Using it, he can for instance make a copy of somebody's diseased heart, operate on it outside their body, then instantly teleport the new heart into your body, swapping it out for the old heart. The whole process is so instant and seemless, perfect down to the molecular level that your body doesn't even know a new heart was swapped in, it just keeps on ticking with the new healthy heart.

Now you go to Futuro's lab to see this wonderful invention, but there is an accident, and your brain is piece by piece copied, and the old pieces of your brain are swapped out with the new copied pieces, leaving the pieces of your old brain in a bloody heap on the floor.

Question, are you still the same person? Granted you will act the same, have the same memories, because behaviors and memories are presumably results of configurations of the brain, which was perfectly copied. But is your consciousness the same, or are all your memories and behaviors being experienced by a new person who is exactly like you?

If you are the same person (same consciousness) then you have to accept all kinds of weirdness: One is that you could have just been copied perfectly, meaning your consciousness would be in two places at once. Not another person who is just like you, but YOUR CONSCIOUSNESS in two bodies at once.

If you reject that idea and think that you would be dead (because your specific brain was removed) with a new person there, then you have to identify how your old brain, which is molecularly identical to Dr. Futuro's copy, was different.

edit: BTW, I agree nothing is special about human consciousness vs. animal. I am just pointing out how weird the whole idea is.