Often in movies set in the past, writers go for a cheap nudge-nudge laugh by having a character say something a 'sophisticated' present-day audience knows will be proven ludicrous. This is annoying enough, but it's downright insulting when horrible anachronisms are included. Best example: In 'Wedding Singer' set in 1985, some character plays with a Rubik's Cube and is advised to leave it alone: "NOBODY's ever going to solve it!" WHAT!? The cubes first appeared in 1980, EVERYBODY had one by '81, & thanks especially to many "How To" books, everybody ('cept me) solved 'em by '82. 1983, forget it, sold at garage sales or packed away for good.