"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.