Quote Originally Posted by musicoverall
My hearing tells me it is indeed Mr Shea.
No, it is your brain telling you that it is Mr. Shea. Your hearing is only an objective instrument that takes information from the outside world and passes it to your brain for processing.

And the brain is such a complex machine that it can actually discard objective information from the ear or even add information that is not there during its processing. And you would have to be a robot to be able to control this. This is the exact reason that the medical community tests its new drugs and procedures by concealing from the participants what exactly it is that they are taking.