## Time to get busy

Well I asked for it (the answer sheets to my classmate’s book on general relativity). It came today all 347 pages of it + a small appendix “Light Orbits in the Schwarzschild Geometry”. It’s one of the few times the old school tie has actually been of some use. The real advantages of going to an elite school are (1) the education you can get if you want (2) the people you meet back then or subsequently. WRT #1 — the late 50s was the era of the “Gentleman’s C”.

It should be fun. The book is the exact opposite of the one I’d been working on which put the math front and center. This one puts the physics first and the math later on. I’m glad I’m reading it second because as an undergraduate and graduate student I became adept at mouthing mathematical incantations without really understanding what was going on. I think most of my math now is reasonably solid. I did make a lot of detours I probably didn’t need to make — manifold theory,some serious topology — but that was fun as well.

When you’re out there away from University studying on your own, you assume everything you don’t understand is due to your stupidity. This isn’t always the case (although it usually is), and I’ve found errors in just about every book I’ve studied hard, and my name features on errata web pages of most of them. For one example see https://luysii.wordpress.com/2014/05/01/a-mathematical-near-death-experience/

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