 What is the most likely explanation for why Kolin's anger is so extreme?
Lack of complete loyalty to the state was likely to result in a siege of treatment that left the subject suitably "re-personalized." The maintenance of a proper viewpoint was a necessity if the Planetary State were to survive the hostile plots of Earth and the latter's decadent colonies. Kolin found himself in a group with Jak Ammet, a third cook, and Eva Yrtok, powdered foods storekeeper. Chief Slichow emphasized that the keepers of rations could hardly, in an emergency, give even the appearance of favoring themselves in regard to food. For all Kolin could tell, he and the others were isolated in a world bounded by the rocky ridge behind them and a semi-circle of damp trees and bushes several hundred meters away.
 He had been holding in anger and his captain's reaction was the last straw.
 He is known to be irritable and have mood swings.  He had been holding in anger and his captain's reaction was the last straw.  He was under the effects of the purple berries.  His mind is being controlled by Ashlew.