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Transactional
Quantum mechanical interactions happen as transactions negotiated between a past emitter and a future absorber. The emitter can be thought of as making an offer, which propagates into the future. Possible absorbers compete for the event. At most one of them wins and completes the transaction, sending its acceptance back into the past. The odds of a particular absorber being able to complete the transaction is exactly what you would expect from the mathematical laws of quantum mechanics.
There are generally a huge number of emitters and a huge number of absorbers all competing for transactions. When quantum states are entangled, the transactions that occur must be correlated in order to be logically consistent. Given that all events in the universe are correlated (generally to a very small degree), the entire history of the universe could be regarded as one giant transaction.
Pros
Good time symmetry. The picture looks equally valid if we reverse the roles of emitters and absorbers.Cons
No real explanation of why some transactions complete and others do not.
No explanation of why transactions interfere with one another using
complex amplitudes.
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