I just...can’t relate to living this way. Maybe you have to be a special type of person, but this whole lifestyle just seems exhausting and over-managed.
With that said, I can't imagine using such a powerful, and honestly demanding, tool for everyday knowledge and tangential facts (e.g. Greek mythology as a software engineer). It strikes me as far too much tool for the job.
It seems to me that, if you struggle with retaining things you read, some simple, lightweight note taking strategies, especially handwritten, would be sufficient. I believe that's actually a recommendation that his book recommendation, Where Good Ideas Come From, makes.