* We are shown that time is very malleable inside the Hypercube, to the point of allowing alternate temporal versions of the same person to exist at once. But how is it then possible to determine a precise point in time when the Hypercube collapses?
** The time until collapse could be based on the objective, external time that those observing the cube are existing in. Thus, lifetimes would pass in (subjective) decades and (objective) seconds, which is why the observers weren't too surprised at the end: [[spoiler:given the almost infinite branches of time that are possible in the Hypercube, at least one person would fulfill the mission properly.]]