It's almost certainly a myth in Edison's case. Seems like he considered it his brand in a way. Reports from his contemporaries are that he slept much more than

It's almost certainly a myth in Edison's case. Seems like he considered it his brand in a way. Reports from his contemporaries are that he slept much more than he would have liked to admit. http://www.supermemo.com/articles/polyphasic.htm#Thomas%20Alva%20Edison http://www.supermemo.com/articles/polyphasic.htm#Thomas%20Al...