[Strilanc]

Pragmatically, we're kind of forced to assume simplicity until we can show otherwise. "Maybe we just haven't figured it out" applies to everything. Maybe we just haven't figured out how to violate energy conservation, or time travel, or escape the matrix.

Quantum randomness has a quality that makes it hard to explain in other ways. The results of measurements can't be made up on the spot, because they need to correlate with remote measurements. They also can't be stored ahead of time, because of how the correlation depends on which measurement is performed.