One of the worst things for a scientist is to be right but be early. The Earth goes around the Sun? Burn him at the stake! You want doctors to wash their hands between patients? Get out of my hospital. So there are creatures too small to see, causing cholera in the water? Drink up. Although all these visionaries and countless others had it right, they suffered for their genius, and were vindicated only too late to enjoy it.

David Crossley has degrees in both electrical and mechanical engineering; he retired from a 40-year career in the aerospace arena. He taught electromagnetics at New Mexico State University, performed electronic warfare operations in five war zones with the Air Force at Kirtland Air Force Base, and is now playing oboe with the Albuquerque Philharmonic.