the tricky thing is that is he really sentient or is it all just a matter of programming. Take away a few lines of code and he can no longer sing. Take away a few lines of code and he can't speak, take away a few lines of code and his whole personality is changed
A rather philosophical question! I mean, ultimately how do you know anyone is truly sentient and not just a clever simulation?
The Doctor certainly passes the Turing test. And, well, you can probably change a human's personality or eliminate their ability to sing if you zapped the right part of the brain.
absolutely, people with brain injuries sometimes loose abilities depending on the part of the brain that was affected