convert
Explanation
This comic riffs on the idea of finding hidden messages in mathematical constants, specifically pi.
A character excitedly explains to a bald, bewildered-looking man that if you convert pi to base-27 (so that each letter of the alphabet gets its own symbol), a particular word or name "first appears at position 6,852,777." The implication is that they've been searching through the digits of pi for meaningful words or messages.
The caption below reads: "Funtime activity: Figuring out where's 'Waldo' in fundamental constants of reality."
The joke works on several levels. First, it's a reference to the "Where's Waldo?" search-and-find books, absurdly translated into mathematics. Second, it plays on the real mathematical conjecture that pi is a "normal number" -- meaning every possible finite sequence of digits appears somewhere in its decimal expansion. If true, then every word, sentence, and book ever written is encoded somewhere in pi, you just have to look far enough. The comic finds humor in the idea of someone actually bothering to do this -- treating one of the deepest questions in number theory as a whimsical party trick.