Notes from the laboratory.

Slow writing on what learning actually does — and fails to do — in an environment of frictionless answers. Seven entry points, seven adjacent arguments.

• № 01 · Foundations
  Fluency Is Not Understanding

  On the difference between recognising an explanation and being able to rebuild it. Why the most fluent moments are often the least durable, and what to do about it.
  14 min · 2026
• № 02 · Tools
  AI as Gym Equipment, Not Prosthesis

  Two ways of using the same instrument, with opposite consequences for the mind that uses it. A taxonomy and a design principle.
  9 min · 2026
• № 03 · Method
  Why Euclid Still Matters

  A defence of the Elements as a cognitive instrument — and as the closest thing we have to a public training ground for explicit reasoning.
  18 min · 2026
• № 04 · Practice
  Constructive Struggle

  What desirable difficulty looks like in practice — and how to design environments that produce it without descending into mere obstruction.
  11 min · 2026
• № 05 · Calibration
  Training the Ability to Be Less Easy to Fool

  On calibration, counterexamples, and the underrated discipline of doubting one's own fluency. Most people overrate how much they know; this is fixable.
  13 min · 2026
• № 06 · Values
  Productivity Is Not Enough

  A quiet quarrel with the contemporary cult of throughput, and an argument for a different metric: durable capability.
  10 min · 2026
• № 07 · Quadrivium
  What the String Knows

  Geometry and music were once a single study. On the whole-number ratios the eye reads as proportion and the ear hears as consonance — and the correspondence between them that no one has explained. With a guitar and a piano to try it yourself.
  7 min · 2026

More forthcoming. Writing here is unhurried by design.