"blood music" (first published as a short story in 1983, and expanded to a novel in 1985) has also been credited as being the first account of nanotechnology in science fiction. the short story described microscopic medical machines. he described dna as a computer system that could be changed. in "queen of angels" and "slant", bear gives a detailed description of a near-future nanotechnological society. this historical sequence continues with "heads"–which may contain the first description of a "quantum logic computer"–and with "moving mars". these books also show the historical development of self-awareness in ais. one ai character called jill is in all of these books. bear was influenced by robert a. heinlein's self-aware computer mycroft holmes ("high-optional, logical, multi-evaluating supervisor") in "the moon is a harsh mistress" when creating jill.