What I am figuring out, written down.

The Eigen Question

Most decisions drown in twenty reasonable-sounding questions. Good judgment, I've come to think, is mostly the skill of finding the one question underneath all of them — the one whose answer doesn't move no matter how the argument gets reframed.

Clarity Out of Ambiguity

In 2011 Google tore up its org chart and, almost by accident, worked out how to measure growth properly. The framework that came out of it is the clearest thing I've found for describing what actually changes as a career grows — mine included.

God's Dice

Humans threw dice for five thousand years before working out what chance even was — and it turns out we still hadn't finished the job. A grounded tour of the difference between 'unpredictable' and 'truly random,' Einstein's famous objection, the experiment that settled it, and what Google's Willow chip actually demonstrated in December 2024.