river stone 1-15-11

When I took geometry in high school, I never thought I’d have any reason to remember the Pythagorean Therum or Algebra. More than 50 years later, I’m learning to do modular knitting and I have to figure out how many stitches to pick up along the hypotenuse of a knitted right triangle. But these days, even if I don’t know, Google knows.

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