I think your question could be better focused. Do you mean "How do others retain information from non-fiction books they've read?"

I read, mostly on my Kindle, mostly at night before falling asleep. I gladly re-read books I've enjoyed and usually get a lot more out of it the second go-around compared to the first.

We believe it was not just about saving money, but also the fact that he is older (almost 50). He felt they were a bit age-ist, wanting his knowledge and experience and yet not willing to hire someone in his age bracket.