Ian Duhig on Twitter: "Crinkle-crankle walls use fewer bricks than straight ones which need at least two layers of bricks fo...

Crinkle-crankle walls use fewer bricks than straight ones which need at least two layers of bricks for strength: here arch support provided by the curves. I like them because they teach that a straight line is not always the best model, true for poetry and us all. pic.twitter.com/o62JUYnKXc

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