A Quantum Filesystem?
(Up to: Ideas )
Under a quantum file system, instead of a file being a string of data that gets updated, could you have simply a pointer that when read, returns the desired result, assuming that any possible combination of bits (or qubits) is possible, and that you only get the bits you want back when you actually access it.
Kind of like a "selection pointer" into "quantum space".
Then, rather than "over-writing" data, you would simply update the "pointer" to select a different result next time it's read.
It's a bit like, given an infinite number of monkeys and typewriters, choosing just the right monkeys, in the right order, to produce the text that you want.
Meanwhile, in reality...