Lumbroso

I teach computer science and build tools for thinking with AI. Before Penn I spent over a decade at Princeton; my research lineage is analytic combinatorics (with Philippe Flajolet’s school and Robert Sedgewick), and my teaching has always run on a simple conviction: students learn when they are not afraid.

Since 2022 I have been thinking with language models — first in long GPT-4o conversations, then with Claude models — and recording all of it. In July 2025 that practice named itself: conversations as computations — when we think in dialogue, we think in ways we never will again, and the trace of that thinking is worth keeping. Everything in this course descends from that idea.