 Indeterminacy can also arise when objects intermingle in a way which seems to leave it clear that they survive the process, but unclear which object is which. Suppose you remove about half the parts from the bicycle your uncle gave you, about half the parts from the bicycle your aunt gave you, and switch them over. Afterwards, you have two bicycles, each half-made of parts that used to be in the bicycle your uncle gave you, and half-made of parts that used to be in the bicycle your aunt gave you. Which post-repair bicycle is the one your uncle gave you, and which the one your aunt gave you? There seems to be no clear fact of the matter. Let’s call this phenomenon ‘radical disruption’.