This is an installment of Reading Reddit, a Slate pop-up blog about Reddit. In the beginning, there was 1. Then, there was 2. Soon after that, there was 3, and 4, and ...

The following is an excerpt from Beyond Infinity: An Expedition to the Outer Limits of Mathematics, by Eugenia Cheng Mathematics can be thought of as many things: a language, a tool, a game. It might ...