Different technologies. Different levels of certainty.
DNA & sample storage
Genetic testing and forms of biological sample storage exist. Their usefulness depends on the material, preservation method, consent, custody and future application.
Cryonics
Organisations preserve people after legal death at very low temperatures. No cryonically preserved human has been revived.
Longevity & regeneration
Ageing biology, cellular reprogramming, tissue engineering and regenerative medicine are real research fields whose eventual limits remain unknown.
AI & digital identity
AI can imitate patterns from a person's records. That is not evidence of continuity of consciousness or transfer of a person into software.
A rule for extraordinary claims
Ask what has actually been demonstrated, what exists only in early research, and what requires discoveries that have not happened.
