"No GIS can be a success without the right people involved. A real-world GIS is actually a complex system of interrelated parts, and at the center of this system is a smart person who understands the whole."
~Roger Tomlinson from "Thinking about GIS"
Primer document that discusses overview of GIS technology and data; technological dimensions of GIS and related technologies; and GIS data types, structures, and applications.
Geocoding, Statistics, Cluster Detection, Bayesian Mapping, Hierarchical Modeling
A post by Jack Dangermond: More thoughts on the benefits of GIS