[ChuckMcM]

FWIW, I read a lot and while I often find it difficult to "recall on demand" particular things I've read, I have often experienced that I'll recall what I read in a relevant situation. I first experienced this when I did engineering calculus in college which covered a lot of (for me) obscure parts of calculus. And frankly I couldn't recall much of it at all, but when I took electromagnetic field theory and needed it to answer a question, it would bubble up to the surface.

That experience lead me to keep reading interesting things even if I couldn't recall them a week later on the assumption that when the need arose, if it was relevant, my brain might somehow surface the information for me.