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A minor note of amusement: Some of you may be familiar with John Baez, a relentlessly informative mathematical physicist. He produces, on a less-than-weekly basis, a column on sundry topics of interest called This Week's Finds. The most recent of such mentions topics such as using icosahedra to solve quintic equations, an isomorphism between processes in chemistry, electronics, thermodynamics, and other domains described in terms of category theory, and some speculation about applications of category theoretical constructs to physics.
Which is all well and good and worth reading, but largely off-topic. Rather, I'm mentioning this on LW because of the link and quotation Baez put at the end of the column, as it seemed like something people here would appreciate.
Go ahead and take a look, even if you don't follow the rest of the column!