by Daniel Ranard
Sometimes it's easier to understand abstract math with a story. When I explain bits of math to unsuspecting friends, I'm always happy by how quickly they follow. Even precise definitions and proofs are easy to learn with a little work. But for the uninitiated, eventually the words and symbols start to slip from the mind, the thread of logic lost in a haze.
That's where a story can help. You don't need plot or character development, just a loose narrative frame. Our brain is a logical powerhouse, but it's used to dealing with people, not abstractions. By casting mathematical notions within a narrative about people with intentions, we're more likely to remember them.
Storytelling is not just a crutch for novices. Some imagine mathematicians are a weird breed, better equipped to deal with symbols than with people. But in my anecdotal experience, experts use stories all the time. It becomes automatic, and the stories shrink to scraps of human narrative: anthropomorphized symbols, definitions imbued with intentionality, proofs framed as struggles. Sometimes a student is lost in the fog of abstraction, only to seize at these imagined human elements and successfully finish an argument. It's a skill to be learned, like so much of mathematical "talent." Eventually, the abstractions may become familiar like friends, no longer requiring the imposition of human costume.
I'll share a story about infinity, dreamed up by the mathematician David Hilbert in a 1924 lecture. It's called the Paradox of the Grand Hotel, or Hilbert's Hotel. Although it's more story-like and less precise than the "stories" I mentioned above, it's a nice introduction to the notion of infinity.
