A circuit editor and a manual for building a computer starting with a NAND gate. Draw a circuit, name it, and it becomes a box you drop into the next one — all the way up to a CPU.

An open-source AI agent platform that runs local and remote models in Docker containers. Bring your own key for Gemini, OpenAI, or Anthropic.

A navigable 3D reconstruction of La Tourgue, the fortress of Victor Hugo's Quatrevingt-treize, built from the novel's own descriptions. Walk through five moments of the siege, from the truce to the guillotine at dawn, or watch the night of the assault, the court martial and the dawn play out in seventeen narrated chapters set to Beethoven and Mozart, with 236 passages from the book.

Every thought experiment from Lewis Carroll Epstein's book of the same name, made interactive: Galileo's ship, the light clock, the traveling twin, E = mc², gravity as curved spacetime and the black hole. Play them, scrub through time and change the speeds to build intuition for special and general relativity without equations.