According to LessWrong author Aurelia, the case for human cryopreservation rests on a simple insight: you don't need to know how to revive someone to preserve them. She draws a parallel to the San Diego Frozen Zoo, established in 1975 to preserve cells from endangered species using liquid nitrogen. At the time, scientists didn't know how to clone mammals or sequence DNA—yet Dr. Kurt Benirschke preserved those cells anyway, armed only with basic biology: that DNA was stable and cells held genetic information. Fifty years later, those preserved samples are powering species conservation. Song argues neuroscience is in a similar place today. We understand enough about how the brain stores information—its physical structure, how neurons connect—to preserve that structure through cryopreservation. We don't need a roadmap to revival. In Benirschke's words: 'You must collect things for reasons you don't yet understand.'

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