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@andrewpprice Actually it's interesting here's a picture from 1525 of "raytracing". https://t.co/h0XGAixRx3 https://t.co/9lVOp0XDyM
@andrewpprice Actually it's interesting here's a picture from 1525 of "raytracing". https://t.co/h0XGAixRx3 https://t.co/9lVOp0XDyM