Something most people don't see as an anachronism, but apparently it is: striking a match I saw a Boy Scout earning his merit badge in fire-building. His firs

Something most people don't see as an anachronism, but apparently it is: striking a match I saw a Boy Scout earning his merit badge in fire-building. His first task was to start it with a match, and then he'd move on to striking a flint, or something. So he was holding the box vertically, and striking down with the match. A moment's thought will tell you the flame will, quite likely, burn your fingers.