Expanded Dune
This article or section refers to elements from Expanded Dune.
Tyndall was a world first conquered by the Thinking Machines, then recaptured by the Army of the Jihad. According to Dune: The Machine Crusade, a refugee from Tyndall asked Ginaz Swordmaster Jool Noret to teach them so he may destroy many machines. Nooret replied no, but allowed that refugee and any other to watch and learn what they can, for Noret would not take any students.