Inflation

A coherent, mechanistic picture of how the Earth actually works as a coupled system — its biogeochemical cycles, climate physics, ecosystems, pollution pathways, and the leverage points where solutions live. The trunk gives you the throughline a working professional needs to reason about environmental claims; clusters dive into circulation, ecology, paleoclimate, climate modeling, pollution, energy, and mitigation.

A working understanding of calculus — the mathematics of change and accumulation. The trunk gives you the throughline from limits and derivatives through the Fundamental Theorem to the borderlands where calculus hands off to analysis. Clusters dive into rigorous limits, integration techniques, multivariable and vector calculus, differential equations, series, and complex analysis.

A working understanding of the craft of selling — buyer psychology, discovery, qualification, objection handling, negotiation, and pipeline math. The trunk walks one complete deal motion from prospect to close to expansion; clusters dive into outbound mechanics, discovery frameworks, objection playbooks, negotiation, founder-led sales, and enterprise deals.

A working understanding of game theory — the study of how rational agents make decisions when outcomes depend on each other's choices. The trunk gives you the core solution concepts and vocabulary; clusters dive into auctions, bargaining, evolutionary games, mechanism design, and where the rational-actor model fails.

A working understanding of cybersecurity — how attackers operate, how defenders push back, and the moving parts of every modern security program. The trunk gives you the throughline from threat model to defense to response; clusters dive into cryptography, network defense, web application security, secure coding, penetration testing, incident response, cloud security, and governance.

How real estate actually works — as an asset class and as a transaction. The trunk covers ownership and title, mortgages and leverage, valuation, the buy/sell process, rentals and landlording, taxes, development, and REITs; clusters go deep on the math and mechanics.