SOMETHING ELSE I DIDN'T KNOW: KINDS OF MARKETS

I didn't know there were so many variants of the Free Market Fairy. This pic is from:

The double auction market : institutions, theories, and evidence
Author: Daniel Friedman; John Rust
Publisher: Reading, Mass. : Addison-Wesley Pub. Co., ©1993.
Series: Proceedings volume in the Santa Fe Institute studies in the sciences of complexity, v. 14.