As a systems engineer at a nonprofit firm in Reston, Virginia, Passin became fascinated with graphical ways to represent formal logic statements in natural language and their relevance to the Web. He defines the semantic Web as an integrated concept of how computers, humans, and the Web can work together; and introduces systems for representing data and metadata (e.g. topic maps), and how they relate to Web searches. These concepts are applied in two cases studies. Distributed in the US and Canada by Independent Publishers Group.