If we canceled history classes in high schools across the world and replaced them with YouTube videos about history, kids would learn so much more. I just sat through this wonderful 10-minute video on the history of Japan by Bill Wurtz without even skipping ahead because it was so riveting and funny and fast paced. In fact, the video (as silly as it was) was so well done that it actually makes you want to learn more about the history of Japan (which you would do through Wikipedia and not textbooks, of course).