Yes, perhaps a quantum leap of faith.
To quote Douglas Adams:
"There are 2 things you should remember when dealing with parallel universes.
1. They are not really parallel
2. They are not really universes.
Even if you do not believe in the multiverse theory they do offer good analogies to the quantum world.
The double slit experiment is a good example.
The single photon passing through the slit interferes with another photon going through the other split. The second photon comes from another universe!
Now as far as conjecture goes. Yes it is conjecture until proven by observation, but it is conjecture with firm roots in solid mathematics.
Now to come back to repeatedly blowing ones brains out to prove a point.
Larry Niven wrote a book called "All the myriad ways"
This deals with suicide with the knowledge of multiple versions of ones self.
They commit suicide out of despair for their current situation because it doesnt matter what you do as the opposite will be true in another reality.
Perhaps this is why the boundary between the microscopic and macroscopic world is so obscure and difficult to penetrate. Quantum mechanics does not reveal itself in the realities of the macroscopic world for good reason.
How confusing would the observable universe be if it and ourselves were in two or more places at once.
Now I agree, all things are possible, but are they probable!
Schrodingers equations dealt with probabilities of specific outcomes and not that the outcomes all existed when the probability wave collapsed.
Quantum theory deals with uncertainties and Physics deals with certainties.
