I remember back around the time of the iPhone 1 seeing a “this is the future!” commercial featuring a lady using a tablet. She was making lots of vague gestures that didn’t correlate to anything on the screen and the tablet “just knew” to do lots of diverse actions correctly. I thought it was ridiculous.

Well, here we are. What the commercial didn’t cover was that you had to guess and poke semi-randomly to discover all the magic gestures and were never sure if you were missing something important because it’s right there, but invisible.