Related coverage from How To Do Everything: Tech: Devon Delfino is a Brooklyn-based freelance journalist specializing in personal finance, culture, politics, and identity. Her work has been featured ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Math has a certain logic to it. If you use it to accurately describe a situation, sometimes you can predict the inevitable — for instance, the moment an eclipse will take place — centuries in advance.