Memor enjoyed experimenting with the primate. Memor listened to the rumble of the fast train and ignored Bemor, who was working on his portable communicator. The primate was irked, eyes narrowed, after she heard some of Memor’s remarks about the difficulty of negotiating with their Captain. Tananareve did not know she carried embedded sensors that reported regularly to Memor’s diagnostic systems. When she got angry, her heart rate, arterial tension, and testosterone production increased. Quite interestingly, her stress hormones decreased. Memor turned out of the line of sight and flourished a flat display of the primate response. “Bemor, note this, please.” Bemor idly cast a distracted glance. Memor sent the data set to him and he glanced at the curves on his comm. “How odd, that anger relieves stress in these primates.” He sniffed. “With bad social effects, I would wager.” “Why? It must have evolved in the wild—” “Exactly. They feel the stress-lowering as a kind of pleasure.