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"...a market economy is essentially a genetic algorithm for solving resource allocation problems..."
- Charles Stross

Jubba Cloak  
  An all-purpose garment in common use on Arrakis  

The entrance doors swung wide. Atreides guards emerged swiftly, all of them heavily armed--slow-pellet stunners, swords and shields. Behind them came a tall man, hawk-faced, dark of skin and hair. He wore a jubba cloak with Atreides crest at the breast, and wore it in a way that betrayed his unfamiliarity with the garment. It clung to the legs of his stillsuit on one side. It lacked a free-swinging, striding rhythm.

Beside the man walked a youth with the same dark hair, but rounder in the face. The youth seemed small for the fifteen years Kynes knew him to have. But the young body carried a sense of command, a poised assurance, as though he saw and knew things all around him that were not visible to others. And he wore the same style cloak as his father, yet with casual ease that made one think the boy had always worn such clothing.

Technovelgy from Dune, by Frank Herbert.
Published by Putnam in 1965
Additional resources -

The jubba cloak is an all-purpose garment, that can be set to reflect or admit radiant heat; it can also be converted to a hammock or shelter.

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Additional resources:
  More Ideas and Technology from Dune
  More Ideas and Technology by Frank Herbert
  Tech news articles related to Dune
  Tech news articles related to works by Frank Herbert

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