Category:Unsolved Problems

In 2021 Randall made a comic, 2529: Unsolved Math Problems, about three categories of unsolved match problems. The last category was cursed, a recurrent theme on xkcd. In 2025, almost four years later, a sequel was published, 3115: Unsolved Physics Problems, with the exact same setup with three similar categories, but now for unsolved physics problem, thus making this into a miniseries. Interesting to see if Randall someday continues this series with other fields, but math and physics are two of his main fields of expertise.