To add a little balance to this discussion, let it be noted that faking one's way through the flight physical didn't always turn out well. Consider this account of his younger brother's death by Gen. Billy Mitchell:
"As he came in to land he had a great deal of speed. His front wheels hit hard and he bounced. He lowered the tail of his ship. The next time the wheels and the tail skid hit hard, and again he bounced. Apparently he decided to make another turn of the field, so he put on his motor and started to make a circle.
When he started to make the turn, the longerons or beams in the back part of the fuselage broke, and the ship fell to earth, and he was instantly killed. It was a weak ship.
While primarily his death was due to a weak airplane, I think that his eyes were not as good as they should have been, and that he stretched matters in his physical examination to get by the doctors, in his anxiety to be in the Air Service...
I have made up my mind more than ever to rely on the judgment of the doctors as to a man's fitness for flight. Our doctors prove their value more and more every day."
The other side of the coin!