freezing brains could be worth thinking about Well, freezing destroys cell membranes, unfortunately. There's no way to repair every cell. And even if you cou

freezing brains could be worth thinking about Well, freezing destroys cell membranes, unfortunately. There's no way to repair every cell. And even if you could, there's no guarantee the overall system will function the same afterward. Cryogenics will probably take the form of sustaining life, rather than freezing what has already expired. For example, perhaps slowing a physical body's metabolism for decades would enable the body to last centuries before dying. So it'd be "time travel" to the future. But that has horrendous logistical issues, e.g. feeding, maintenance of the chamber, somehow retaining muscle mass of the person, avoiding bed sores, waste disposal, antibiotics during times of sickness, regulating body temperature, a failsafe for each system, etc.