Field Notes
Field Notes are where I publish work that is still close to the source.
They are less polished than essays, but still relevant. Some are observations, experiments, reactions, or partial conclusions. Most come directly out of real projects, research, and day-to-day use of AI.
Five Figures on Fertility
The 2025 U.S. fertility figures are easy to summarize and harder to interpret. This work looks at delayed childbearing, long-run fertility decline, sperm-count deterioration, and the narrowing gap between births and deaths, then asks what these patterns may signal when placed next to South Korea, rising child costs, and a changing labor market.