Lore
Kethra
A form of Osharran programmable matter that can perform complex functions without conventional electronics, but becomes dangerous at scale.
Kethra is a form of programmable matter the Osharré learned to manipulate using a library of practical recipes.
Kethra does not behave like a normal material. In small quantities, it can be coaxed into useful, repeatable functions: patterning, regulation, actuation, sensing, coordination, and other operations that do not require a transistor-based computing stack.
Where humans would build circuits and software, the Osharré often built structures and taught kethra how to behave inside them. Kethra let the Osharré skip entire layers of electronic development while still achieving complex outcomes.
Humanity’s first serious brush with kethra came indirectly: a kethra sample found on Laconia inside biological tissue. Reinhardt-Vance scientists mistakenly classified it by analogy, treating it as if it were similar in kind to Maren Renn’s nanomachines.
The sample ended up in Davis Renn’s lab, where it remained limited and inert in practice. There was not enough kethra to coordinate into anything like a mind, Davis did not have the Osharran recipes, and he lacked the recipe that would let kethra reproduce.