Divine Proportions: Rational Trigonometry to Universal Geometry
Norman John Wildberger
A Theory of Fun for Game Design
Raph Koster
Computational Geometry - Convex Hulls
Jeff Erickson
Portfolios of the Poor
Daryl Collins & Jonathan Morduch & Stuart Rutherford & Orlanda Ruthven
"Trickle Down Theory" and "Tax Cuts for the Rich"
Thomas Sowell