"Before someone learns a shortcut, it’s helpful for them to know just what it is they’re shortcutting. But after they’ve done it a few times, it’s appropriate to reveal the shortcut—just like a video game rewards you for completing a level. Shortcut achievement unlocked! This is how games take players from novice to expert to master, and other kinds of software can benefit from this, too."

Looking at the gestures in #NewNewTwitter from a UX lens (Global Moxie)