  I numerically simulate and compare the entanglement of two quanta using the
conventional formulation of quantum mechanics and a time-symmetric formulation
that has no collapse postulate. The experimental predictions of the two
formulations are identical, but the entanglement predictions are significantly
different. The time-symmetric formulation reveals an experimentally testable
discrepancy in the original quantum analysis of the Hanbury Brown-Twiss
experiment, suggests solutions to some parts of the nonlocality and measurement
problems, fixes known time asymmetries in the conventional formulation, and
answers Bell's question "How do you convert an 'and' into an 'or'?'"
