His hack for annotating paper books is brilliant.
I stick in one a4 size folded paper in each book I am reading.
Thoughts, references, names, dates, quotes, aha moments all go into that one page. Usually read a chapter, re-read it and then take notes, not while reading.
Page goes into a binder when I complete or drop the book. I like the index of one page summaries I've built up this way. Also nice to see my thought processes evolving.
Prepare some strips of paper like this guy does, and make notes on them while reading. But then, also always take pictures of the page, with your strip of notes in the picture.
That would solve both of the problems he mentioned:
> The downside of this is that in order to annotations to make sense, it requires a physical copy of exact same book. Another one is that it doesn't have automatic timestamps, which somewhat bothers my #lifelogging OCD.
If you take a picture of the page and the strip of notes then you get the timestamp for free. And by including the page of text in the picture you have that context preserved as well.