@LKrauss1 My son is in his second year of a math/astrophysics degree. He loves Feynman and anything astro. Your two books and/or the Feynman select papers would make his day!
"there is no evidence critical thinking and problem solving are skills that can actually be taught. Psychologists suspect we can only think critically about a subject after we have accrued some deep knowledge in it." https://t.co/f2yHl1DnAW