Freeman Dyson is 87. Nobel Prize winning neuroscientist David Hubel is 84 and still working; I see him around the building where I work. Ray Bradbury is 90, and while he may not be fond of the internet, I expect he's familiar with nanoseconds.

Grace Hopper went on the David Letterman show at 79 and showed her example nanosecond - a length of telephone wire that would take a nanosecond for a signal to traverse. She died at 85 in 1992 and would probably still be talking about nanoseconds today if she were still alive and mentally sharp.

Can easily happen if the individual is a physiscist. :) Edward Teller wrote this book in his 90+s, and nanosecond is certainly not the most technical word in this book:)

http://www.amazon.com/gp/product/0738207780/ref=pd_lpo_k2_dp...