* People have trouble believing Thomas Edison to be a loopy individual. I offer as evidence the following passage on human memory, taken from his diaries: “We do not remember. A certain group of our little people do this for us. They live in that part of the brain which has become known as the ‘fold of Broca.’ … There may be twelve or fifteen shifts that change about and are on duty at different times like men in a factory…. Therefore it seems likely that remembering a thing is all a matter of getting in touch with the shift that was on duty when the recording was done.”