The goal of brain preservation is to preserve and protect the information in someone’s brain indefinitely, with the aim of potential revival if future civilizational capacity ever allows it to be feasible and humane. Since we’re considering a hypothetical outcome in the distant future, a key question is: how can we evaluate the quality of preservation today? We need metrics to avoid wasting time and money on useless rituals.
Makes me think of when there's revival of the dead. They'll freeze upon waking.