Asimov

Amaton: Sneezes obviously are intended to clear our upper respiratory tract or inturupt weddings and funerals but are violent, largely uncontrolled and dangerous to our eyes. The head moves violently and an eye can be put out. Natural selection provides a strong protective reflex. You cant sneeze with your eyes open! Try it next time you need to sneez Only a very few can train themselves to over ride this reflex. In optometry school I found an easy way to voluntarily constrict or dilate my pupils at will. Won some bets but Dr, Janks at 70+ years old quickly figured it out. Kept my secret.