Start here

The best place to begin is with the best five.

Each field note is a short essay on one idea that great leaders use: how to decide, what to focus on, how to hand over ownership and how to keep growing. Each one takes a few minutes and ends with a practical method you can use the same day.

  1. Nº 0314 Oct 2026Judgment The best leaders don't wait for certainty. They decide how reversible a decision is, then set their speed to match.Jeff Bezos's one-way and two-way doors: decide how reversible a choice is, then set your speed to match.2 min read
  2. Nº 0114 Oct 2026Building things that last Focus is the most misunderstood word in business.Steve Jobs defined focus as saying no to the hundred other good ideas. Why great leaders treat no as a creative act.3 min read
  3. Nº 0515 Oct 2026Leading people Ownership is three things handed over together: the outcome, the authority and the context.Effective delegation for engineering leaders: hand over the outcome, the authority and the context together, with a five-step ownership handover.2 min read
  4. Nº 0214 Oct 2026Judgment The best plan begins with a list of places you refuse to go.Charlie Munger's inversion: the best plan begins with a list of places you refuse to go.2 min read
  5. Nº 0415 Oct 2026Growth and ambition Most people collect knowledge. The best let it compound.Why learning compounds: how leaders build depth in one field, turn it into judgment, and grow faster than people who only collect knowledge.2 min read

Series

Ideas that build on each other.