A reminder to non-Americans: assigning Pi Day to 22nd July is not only more accurate than 3.14 (22/7 is 3.14285), it's also more likely to annoy Americans.
For millennia, the circle has been considered the most perfect of shapes, and the circle constant π captured the geometry of the circle in a single number. But π is wrong, and it’s time to set things right.
James Wallis
BillSaysThis
Peter Butler