Flint-knapping: Haven't heard it called that before

Before you go to the links, check the picture out. Funny how some things catch people's fancy <g> see, for instance, news.bbc.co.uk/1/hi/ sci/tech/4713323.stm - also noted at Pharyngula (July 25, 2005) and Pagan Prattle: www.prattle.net/ archives/001871.html, and probably quite a few other places.