Many legitimate - and apocryphal - stories have been bandied about the famed Albert Einstein. I’m not sure into which category the following fits, although it certainly seems like the old chap. During one of his many travels the esteemed physicist was deep in thought as the train rhythmically rumbled on its rails. The conductor approached collecting tickets. Einstein checked his jacket pocket and found it empty. A glance at the seat beside revealed no ticket. And a search of his carry bag likewise came up blank.