I think your argument presupposes its own correctness.
How about... The anesthetic shut down part, but not all of your brain. The rest was still functioning, and lacking external input (which was shut down by that anesthetic) made it up. In other words, you <dreamed, hallucinated, pick your word> that you were outside your body watching the surgery.
Or we can supposes that there exist some non-physical "something" inside of you that, in spite of being non-physical, operates your brain. This non-physical something maintains your personality, abilities, and memories. This non-physical thing is, of course, unaffected by physical things like drugs, and, so, when the brain it normally operates is shut down by drugs, it can leave it and wander about and react to physical things like electromagnetic waves- -in spite of the fact that the organs (the eyes) that it normally is dependent on to do that are now non-functional.
And then we apply Occam's Razor.... |