Keltham takes a breath of warm air, puts his hands in relatively warmer places, and follows her out into the FREEZING COLD.  "Not yet, gonna take a much higher tech level.  If they're dying under controlled circumstances we pump enough vitrifactants through them to prevent ice crystal formation, chill 'em down to liquid nitrogen temperatures, atoms move around but they move in one-to-one flows which seem pretty likely to map cognitively distinct start states to physically distinguishable end states.  Later, when we can, we'll scan the brain and figure out who the person was and rematerialize that person.  True death is when your plane crashes and splatters your brain all over the place and lets the pieces rot in the sun or burns them in jet fuel, a process which maps many distinct possible people onto overlapping entropized ash heaps."  Keltham has, not very long previously, spent a few very long minutes contemplating this fact and trying really hard to think of some incredibly clever way to have it not happen to him.

Keltham takes a breath of warm air, puts his hands in relatively warmer places, and follows her out into the FREEZING COLD.  "Not yet, gonna take a much higher tech level.  If they're dying under controlled circumstances we pump enough vitrifactants through them to prevent ice crystal formation, chill 'em down to liquid nitrogen temperatures, atoms move around but they move in one-to-one flows which seem pretty likely to map cognitively distinct start states to physically distinguishable end states.  Later, when we can, we'll scan the brain and figure out who the person was and rematerialize that person.  True death is when your plane crashes and splatters your brain all over the place and lets the pieces rot in the sun or burns them in jet fuel, a process which maps many distinct possible people onto overlapping entropized ash heaps."  Keltham has, a quite short time previously, spent some very long minutes contemplating this fact and trying really hard to think of some incredibly clever way to have it not happen to him.