Here’s another example: Vine is a video service...

Here’s another example: Vine is a video service without a play button. This was intentional. Old things are beautiful, but new things should look, well… new. That’s why Vine doesn’t have a play button. It also doesn’t have a pause button, a timeline scrubber, a blinking red light, or dials and a brushed-metal finish to give you the impression that you’re using a dusty video camera.

Blog — Vine