far-trader said:
...and in the meantime, I'm not sure I get your issues with hibernation berths though rust?
In Traveller's original concept, lowering the body temperature to below
zero, the water in the body's cells would freeze and turn into ice crystals,
which would rupture the cell walls. To give an example of the effect, the
Inuit "cook" meat by freezing it, it breaks up the cell walls and makes the
meat edible, just as roasting the meat does.
But the basic flaw was a misunderstanding of hibernation. Hibernating
animals do not sleep during the entire hibernation period, they wake up,
move around a bit to prevent muscle atrophy (the body reduces muscles
which are not used), eat (which is why hamsters, squirrels and thelike
gather food for the hibernation period), and go to the toilet. Bears even
get their young ones during their hibernation period. So, the activity is
much reduced, but it is still there.
Humans are a special case, their big brains need a lot of energy and oxy-
gen to work. If the metabolism is slowed down beneath a certain level,
and not enough nutrients and oxygen reach the brain cells, the result is
first massive brain damage, and then death. Therefore the heart has to
beat a certain minimum number of times per hour, and the lungs have
to breath a minimum number of times per hour, or the person will die.
Therefore it would make a lot more sense to keep the body warm, feed
it easily digestible highly nutrient food and lead it to the toilet about once
per day to prevent muscle atrophy. If a reduced mental state is deemed
necessary, drugs could do that.
As for the "freezing" experiments, there have been many, with a peak
around ca. 2007, but all have ended in failures, usually with perceived
success in the beginning and the discovery of serious brain damage la-
ter on (the "zombie dogs" were a famous case). Even if it should turn out
some day that it can be done, which I seriously doubt, it would require
a lot more than just to put the body into a freezer, and the treatment to
prepare the body for the freeze (exchange all blood for another, non-
freeze liquid, etc.) would be dangerous as well as very expensive.