Yeah - ephemerality is going to be the word of the century. We forget, and since this is such a natural thing to us, we did not immediately realise how machines that cannot forget was very much problematic. We get that now.

There are a bunch of people trying to make apps that forget over time, eventually, one of them will figure out a way to mass market. Heck, I spent last Saturday at the top of HN with one of those that I made, Aether. [0] Prior HN discussion: https://news.ycombinator.com/item?id=18370208

[0] https://getaether.net