Welcome to class An Essay by Bill Tozier vaguery.com I differ from almost all your previous instructors in three ways: First, I acknowledge that this is true, whereas they have for the most part lied to you (and themselves) and declared you competent, even though they’ve had to re-train you from scratch in every damned class. Second, unlike them I intend to do something about it. And, third, in order to do something about it, I will let you—no, make you—cheat. teaching
Fermi Estimates and Dyson Designs An Article by Venkatesh Rao www.ribbonfarm.com A Fermi estimate is a quick-and-dirty solution to an arbitrary scientific or engineering analysis problem. Fermi estimation uses widely known numbers, readily observable phenomenology, basic physics equations, and a bunch of approximation techniques to arrive at rough answers that tend to be correct within an order of magnitude or so. The term is named for Enrico Fermi, who was famously good at this sort of thing. …It struck me that there is counterpart to this kind of thinking on the synthesis side, where you use similar techniques to arrive at a very rough design for a complex engineered artifact. I call such a design approach Dyson design, after the physicist Freeman Dyson, who was one of the best practitioners of it (not to be confused with inventor James Dyson, whose designs, ironically, are not Dyson designs). designphysics