I'll ask a bit of a follow-on question which is: How often do you refer to your old notes? For myself, I find the act of taking notes to be worthwhile because

I'll ask a bit of a follow-on question which is: How often do you refer to your old notes? For myself, I find the act of taking notes to be worthwhile because writing forces me to think in a way that can be clarifying. But, I tend to never look at my notes once taken.