Mindbenders →[More:]Every now and then I get the urge to study something I a)know nothing about, b) am unlikely to ever understand, c) will give me no benefit. Call it rampant curiosity. Last winter it was String Theory, which was especially quixotic since higher maths are NOT my strong suit, for that matter middle maths aren't either. Now I am thinking I need a new one, such as, oh, say metallurgy. Anyone else into this sort of mental masochism, and if so, have you ever been surprised/delighted/fascinated by something you decided to look into?