http://msmvps.com/blogs/access/archive/2008/02/16/arthur-benjamin-lightning-calculation-and-other-quot-mathemagic-quot.aspxFellow Access MVP Allen Browne brought the following video to our attention. Incredible. Arthur Benjamin: Lightning calculation and other "Mathemagic" I was quite interested in mathematics as a teenager. Thanks to my teacher Mr. (Chester I thinkenCommunityServer 2008.5 SP2 (Build: 40407.4157)