This is a fascinating book, published in 1996, and it’s a cyberpunk vision of a technological future, in the vein of William Gibson. The author creates an extraordinary vision of an all-encompassing virtual environment in which we will interact though avatars, but at the same time he describes the back doors, and the fact that there is a control hierarchy: there is an underworld and an overworld, as it were, of the social engineering that goes into the development of these spaces.