• Definitions
• Key Concepts / Terms / Slogans
• The "Narrow Waist": A Special Case of the Perlis-Thompson Principle
• What Is it? What are other names for it?
• Prominent Examples of Narrow Waists
• Unix Philosophy and Narrow Waists
• What Isn't a Narrow Waist?
• Examples of "Projection" Onto a Narrow Waist
• Examples of M x N Code Explosions
• Textbook References (TODO)
• Links on Narrow Waists
• The Networking Community Explicitly Thinks In Terms of the Narrow Waist / Hourglass
• Links on The Perlis-Thompson Principle in General
• Special Cases
• Counterpoints / Fallacies
• Related Pages