The numberphile microbe loves Church numbers. His strategy is this: never one without the other. When he finds one Church number he looks around for the second one. Then he chains the first to the second and only after that he starts to slowly munch the head of the first. Meanwhile the second Church number watches the hapless first Church number entering, atom by atom, in the numberphile mouth.
Only the last Church number survives, in the form of the numberphile’s tail.