/sci/ - Science & Math

This is not true, and wouldn't work. There is no such thing as quantum immortality.

Yes, at every quantum juncture, all possibilities are followed. That doesn't mean that every world that you can conceive of is possible. It may be that all possibilities lead to your death.

Think of it like a formal system. You start with axioms, and create every possible statement. That doesn't mean you generate every statement. You explore a subset of all possible arrangements of symbols. In fact, most arrangements of symbols are not well-formed, followed by well-formed statements that can't be produced by the system, followed by producible statements.

The universe is no different. There is a starting state - or even an ensemble. Then the laws of physics are applied at each instant, and every quantum possibility followed. Run for 13.5 billion years, and you have explored only a tiny, tiny piece of the space of all possible universes. 99.99999+% of conceivable states will not be realized.

As a final example, consider garden-of-eden states in the game of Life. No prior state logically leads to them. In the real world, quantum alternatives will never lead to garden-of-eden states.

tl;dr quantum immortality is stupid and anyone that believes in it is a fool.