We need an entire gesture language! We have language we use to speak to each other, user interfaces, and conventions, and soon we'll need a gesture language. Ca

We need an entire gesture language! We have language we use to speak to each other, user interfaces, and conventions, and soon we'll need a gesture language. Can you imagine if every touch app had a different way to turn up the volume? But if there was a volume gesture, people would know how to do it no matter what application they were using.