Informed consent is a familiar idea in medicine: before a procedure, you are told what it does, what it risks, and what it cannot promise, and then you decide. Cryonics inherits that duty, but with a twist that makes it sharper than almost anywhere else in medicine. The outcome here is not uncertain in the ordinary way, like a surgery that usually works. It is uncertain in a deep way: nobody can tell you the odds, because the technology that would complete the procedure does not exist yet. So what does it actually mean to consent to that?
Consenting to a probability, not a promise
The first thing honest consent requires is being clear about what you are agreeing to. You are not buying revival. You are buying preservation, plus a chance, of genuinely unknown size, that a future medicine can do the rest. A provider who lets you believe otherwise has not obtained your consent; they have obtained your confusion. We try hard to avoid that, which is why we say plainly and in writing that revival is currently not possible and that we cannot give you a number for the odds.
That sounds like a weakness in the consent. It is actually the opposite. Consent is only meaningful when the thing you are consenting to is described truthfully, including its worst case. The worst case here is straightforward: the preservation holds, the future never delivers, and the outcome is the same one you faced anyway. Consenting with that fully in view is stronger, not weaker, than consenting to a comforting story.
What you actually need to understand
Genuine informed consent for cryopreservation means understanding several things at once, none of which a provider should soften:
- That this is a bet, not a treatment with a known success rate, and that the bet may simply lose.
- That preservation quality is not guaranteed, because the race against cellular decay depends on how and where you die, not only on the provider's skill.
- That revival, if it ever comes, would land you in a world that has moved on, possibly by a great deal.
- That the organization holding you must remain stable and funded for a very long time, which is a real risk and not a footnote.
If you have understood those and still want to proceed, that is informed consent in the full sense. If a provider has glossed over any of them to get a signature, the signature is worth less.
Consent over a long arc
There is a subtler issue too. Ordinary consent covers a procedure that happens now. Cryonics consent has to stretch across decades, through phases you will not be awake for. That is why the arrangements matter so much: a clear, documented expression of your wishes, made while you can make it, that future people can rely on. Consent here is not a single moment at a desk. It is a durable instruction left for a future that has to be trusted to honor it.
This is also why we treat consent as continuous rather than one-and-done. People can change their minds, update their arrangements, or withdraw. The point of consent is that the choice is and stays yours, not the provider's and not your family's.
Informed consent in cryonics is not agreement that it will work. It is agreement, made with clear eyes, to take an honest and uncertain chance instead of a certain ending.
Done properly, that is what separates a legitimate cryonics provider from a confidence trick. The legitimacy is in the honesty: telling you exactly how uncertain this is, refusing to oversell it, and letting you decide anyway. That same honesty is what makes it defensible for a company to offer this at all, which is the subject of the morality of offering cryonics now.