A mnemonic was an individual who could mentally record the spoken thoughts of another individual and talk in that same individual's "own voice." It was a skill on the Homeworld, albeit a neglected one; by the time Chatelaine Thessalia recruited Larissa, none of the colleges offered the skill in their instruction. Larissa learned how to be a mnemonic while living in House Ixion, and became Thessalia's personal "little book" during the Order of the Weal's increasingly fanatical investigations of the future War in Heaven. (PROSE: Newtons Sleep)