The “shake” gesture must die

Gestures are a paradox in the post-PC world. They are entirely un-discoverable — i.e. they are hidden, and users have to be told that they are there. Related, Windows 8.1 now shows the user where its gestures are, whereas in Windows 8 they did not.

A well-designed OS doesn’t require the user to know any gestures. iOS is packed with gestures, but most people don’t know they are there because they are not required to use the platform. Compare this to BlackBerry 10, which is entirely gesture-base...