On Pi Day this year I was giving a keynote talk at DataFest in Scotland, so we celebrated Pi Day a week later, on the 21st. While it wasn’t the exact date, there’s never a bad time to eat pizza and Pi Cake.

This was the tenthPiCake, and it’sprettyhard to beat the Einstein design on last year’s Pi Cake, so Empire Cakes gave created us a cake with the actual definition of pi: The ratio of a circle’s circumference to its diameter.

For pizza we went to the new Lombardi’s in Chelsea. They use an amazing electric oven instead of coal, so if you look closely you can tell the difference, but the pizza was still great and the decor was fantastic.

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