Hormones are everything, Turpin," she said to the bird on her shoulder. "Brains are nice, and looks are nice, and logic's even nicer; but hormones ru… - Charles Sheffield

Human history extends for approximately ten thousand years before the Expansion, with written records available for roughly half that time. Unfortunately, the human tendency for self-delusion, self-aggrandizement, and baseless faith in human superiority over all other intelligent life-forms renders much of the written record unreliable. Serious research workers are advised to seek alternative primary data sources concerning humans. —From the Universal Species Catalog (Subclass: Sapients)

Not it. He. Bey was sure he would have determined that for himself after a few more seconds. There were a hundred clues as to the innate sex of a form, and most of them had nothing to do with appearance or dress.

To a logical entity, such as myself, the behavior of organic intelligences such as yourself, provides many anomalies. For example, the history of humanity, the species concerning which my data banks have most information, is replete with cases where humans, on little or no evidence, have believed in impossibilities. They have accepted the existence of a variety of improbable entities: of gods and demons, of fairies and elves, of 'good luck' charms, of magic potions, of curses and hexes and evil eyes."
"Tally, if you're going to blather about—"
"But at the same time, humans and other organic intelligences often seem unwilling to accept the implications and consequences of their own legitimate scientific theories.