Death & What Follows
Quantum Immortality
A speculative thought experiment built on the many-worlds interpretation of quantum mechanics, suggesting a conscious observer could never actually experience their own death — because in every random quantum branching event some branch always exists in which they continue, and an observer can only ever find themselves continuing to observe in a branch where they’re still alive to do so.
Proponents
Max Tegmark, Hans Moravec
Evidence For
Follows as a strict logical consequence of combining the many-worlds interpretation with a basic fact about observers: nobody can ever be "the one" having the experience of a branch where they don't exist, because there is no continuous observer left in that branch to have any experience at all.
Evidence Against
Even Max Tegmark, who popularized the idea, cautions this doesn't guarantee anything pleasant or continuous-feeling from the inside — most surviving branches would still involve severe injury or decline rather than a clean escape — and the whole argument is moot if the many-worlds interpretation itself turns out not to be correct.
Real Sources
Transmissions
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