Ten years ago, the Bentley Vanguard reported that I started teaching a new class where students bought Pocket PCs instead of textbooks. There were no iPhones or iPads. Today, nearly every student owns a mobile device, and I am an author of their textbook. Who would have predicted?

10 yrs ago, my students used PocketPCs instead of textbooks. Today most have smartphones & I authored their textbook. pic.twitter.com/ZtQlSB9jfU

— Mark Frydenberg (@checkmark) November 4, 2014