How an ancient Egyptian letter could have changed the world

First, I'll admit that I have often found Egyptian history kind of boring.  The same with Greek.  The truth was that I simply hadn't found the right teacher.  I'm watching a 48 part course on Egypt from The Great Courses with Bob Brier as the instructor, and it is fascinating.  The classes are about a half an hour each, and I am half way through them, which means I've already watched 12 hours