Want to know something interesting? When Apple was first starting out, they actually outsourced most of their design to a firm called Frog. The founder of Frog, Hartmut Esslinger, recently dug up a handful of those concepts from the 1980's and published them in a beautiful new hardcover book, Keep It Simple. Check out a few looks below, some of them, like that iWatch/Phone combo, are just WILD.

h/t The Verge