When I was a kid, I’d absorb hints and cheat codes for the latest Nintendo games through a sort of osmosis. On playgrounds or at friends’ houses, we’d trade these bits of wisdom as if they were arcane ...

If there’s one app you rely on more than any other on your phone, it’s probably the app that controls your on-screen keyboard. It’s a funny sort of realization, I realize — ’cause a keyboard isn’t ...