Living Numbers

Populations 101 welcomes absolute beginners into the living logic of population change, using vivid, real-world examples instead of jargon. Across twelve chapters, listeners learn what a "population" is, how births, deaths, arrivals, and departures shape growth and decline, and why time, space, and life history strategies matter.

The Geometry of Change is a field guide to building models that are both honest about complexity and useful in practice. It connects three pillars—how systems work (mechanisms), how we encode them (models), and how we learn from the world (measurement)—into a coherent workflow for decision-making.

Futures in Practice is a practical field guide for making wise choices in a turbulent era. Bridging rigorous analysis with human-centered design, it translates forecasting, ethics, and community participation into concrete strategies that help leaders and neighbors act with clarity under uncertainty.