The brain.

When I was a boy I read a picture book that explained the workings of the human body. The bit I remember in particular detail was a drawing representing the internal workings of a person's brain. I studied it because I loved it. An enormous transparent head filled the double page spread. The head had several levels and staircases leading to different rooms, each of which contained various libraries and training manuals, computers, mechanical devices and other such functional ephemera. In each of these little rooms there were little people busying themselves reading, turning cranking wheels, operating various machinery and shouting orders into telecommunications devices. It was meant to show a busy brain at work operating the body and keeping everything under control. When I look out the window at work towards the office building opposite, seeing all the workers scurrying around filing things, tapping away at computers and generally busying themselves, this is exactly what I see.