Yes, it is a bit surprising but it also relates to relevance. Sure, it is important knowledge and they should know it but, heck, these are college kids whose priorities only barely wrap around getting educated - at least for many. Think back to your college years, if you went, and ask yourself what you would have known then? If that is a current video, many of those kids were born just before this century and that makes 18th and 19th century history, like, really, really, old, you know, so, man, don't hang me up with this stuff, man, 'k? Hey, I got to run 'cause there's free beer on the quad.