Cue the Scroll PhoneTM.
I can’t even imagine the nightmare UI that would accommodate that type of screen.
Mechanically, I could see a device that has a slide down keyboard and a roll up screen. Functionally, I can’t see how it would be useful for daily smart phone actions like one-handed use or swipe-gestures.
This made me think of identical twins. Perfect copies, but the minute they are born (for the convenience of tracking experience) they begin to differ. The majority of their properties and attributes remain identical, but their associations and metadata start to change.
Identical twins provide an interesting thought experiment because a lot of times they end up with the same job roles, married to similar people (or even other sets of twins), dress similarly, have similar attitudes and opinions, etc. But in many ways they are just the same genetic code running in a different environment.
If souls are just uuids, then I guess twins are some type of hash collision?