What did you learn today?

Today, I learned that the Bible is one of the earliest references to π. 1 Kings 7:23 says that Solomon ordered the creation of cylinders with a diameter of 10 cubits and a circumference of 30 cubits, resulting in a value of π equaling 3.
Some "critics of the Bible could say that the Bible is imprecise here, but they cannot legitimately say that it is inaccurate or mistaken." Close enough for religious purposes, said Maimonides. The Lord is holy, for sure, but this pi isn't.