There have been countless times where I was like "Oh I remember there was a book I was searching but not what the name is."

and I didn't know what the name was, when I was looking for it, or the terms that I used for it. THIS is when I expect it to be useful.

I'm fine with taking snapshots of my whole PC activity, as long as data is stored locally. I take plenty of screenshots myself. People act like they have never used a computer for productivity.

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Again, if someone has physical access to my PC, I have better things to worry about.