Reading MS description of Recall, I am struggling to come up with a scenario where it would be any use. Sounds like the backspace button would work almost as well at a fraction of the resources needed.
There's a smell of it being some pet project of a big architect.
Windows 10 had a feature called 'Timeline'. It wasn't particlarly wanted by many people and it cluttered up an otherwise somewhat useful task overview. It was canned.
This seems to be that guy saying "Hey, I know you canned Timeline on me and called it a failure, but that's just because we didn't AI it up, and now we can and everyone is going to want it!"