[cmccabe]

Um, when a general says "we've been fighting for 5,000 years," he's referring to organized conflict, i.e. WAR. It's pretty hard for war to exist without civilization, so, yeah, around 5000 years, give or take, is the accepted number. Part of that is because writing was invented at about that time.

Now you could argue this number, but before you do, ask yourself: do you actually have any experience in this area, or are you just being a pedantic douche? The answer to that question will determine if you should reply.

I also think the guy who asked about books written 5,000 years ago is pretty funny. Well, actually, there is writing dating back to 3,200 BC. If you're going to be a pedant, at least get it right.