‘The quantum suicide thought experiment is based on and seeks to prove what has become an increasingly accepted interpretation of quantum physics, the Many-Worlds theory. This theory was first proposed in 1957 by a doctoral student at Princeton University named Hugh Everett III. The theory was scorned for decades until fellow Princetonian Max Tegman created the quantum suicide experiment, which lends support to the interpretation.
According to the Many-Worlds theory, for each possible outcome to an action, the world splits into a copy of itself. This is an instantaneous process Everett called decohesion. It’s kind of like a choose-your-own-adventure book, but rather than choosing between either exploring the cave or making off with the treasure, the universe splits in two so that each action is taken.’