as a control mechanism, they store the minds of their (former) enemies consciously immersed in simulations of their (respective) reality(ies). i had the rare experience of accidentally melding with such a mind---the Mind-Time channel's rotating modulation code glitched or something. the reality was really real, pain and all that, just minor suggestive control over the avatar in space.   the rewards were enough to want to exert any control i could...