Patrick McKenzie reads and expands on his Bits about Money essays about the plumbing of the financial system, such as payments finality, credit card economics and charitable giving infrastructure. Each episode pairs an explanation of how the system works with concrete case studies and updated postscripts.

Short philosophical essays that use ideas from science, game theory and social dynamics to examine how simplification, collective behavior and hidden assumptions shape human understanding. Each issue builds a single counterintuitive argument, such as Braess's paradox or pluralistic ignorance, and draws broader conclusions about civilization.

Essays on software engineering and delivery systems, focused on how AI-driven increases in code volume strain pipelines, testing and code review. Readers get systems-thinking analysis with concrete examples from real engineering teams.

A newsletter blending distributed systems engineering, systems theory and cybernetics with playful fiction and parenthetical humor. Readers get essays that critique tech culture and argue the observer is part of the system, plus recurring characters and metaphors.