The Millipede Problem

In Slaughterhouse-Five, the Tralfamadorians see human beings as many-legged millipedes stretched across time: a baby at one end, a dying body at the other, and all the moments in between visible at once. It’s a striking image, but the more you press on it, the stranger it gets.

To see the millipede, you have to draw a boundary. You select a particular entity — this person, this organism — and track what enters, exits, and changes within those limits. The boundary makes the pattern legible. But it also cuts the thing off from the world that shapes it: the air it breathes, the food it metabolizes, the people who form its thoughts. The world is not outside the boundary. The world is part of the thing.

This is the central difficulty. Every act of pattern-recognition is also an act of isolation. You gain clarity about the thing by pretending it is separable from everything else — knowing full well that it isn’t. The pattern exists because you drew the line; a different line would reveal a different pattern.

There may be a limit to this problem. Not everything in the universe can influence everything else — the speed of light, the scale of distances, the decay of forces all impose real constraints on what can interact with what. Physics itself draws boundaries. Whether those boundaries are any less arbitrary than ours is another question.