4 ms·

Speak for yourself--I want a damn stillsuit.

• jerf 11y ago
  You can really build one for yourself today. Go get a wetsuit and start hiking through the desert in it. It'll capture all your water just fine. Of course, you'll also die. The problem with a stillsuit is that you can either evaporate a given bit of water for cooling, or you can capture it, but you can not do both. It's physically implausible. Not necessarily impossible, because maybe hypothetically there's some way to concentrate more heat in less water, evaporate that, and recover the rest, although doing that with A: nothing but human power and B: not actually making it so much harder to walk that it's a net loss. And I'd say the efficiency number given in the book probably are impossible, probably provably so in some manner.