3. Stillsuits: Magic Suits or Heatstroke Traps?
A suit that recycles every drop of sweat into drinkable water while keeping you cool—sounds like a dream… or a recipe for disaster. Sweat is our body’s main way to dump heat. If you trap it before it evaporates, you don’t cool down—you overheat. And turning that moisture back into water? You’d need bulky condensers and heat sinks that Herbert never wrote about.
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