ux-phi

ux-phi

Interactive Philosophy Simulations

Argue your way into great moments of philosophical history. Inhabit a character and discover philosophy as conversations in real (ok...simulated) places, between people with commitments, about things that matter the most.

Athens, 5th Century BCE: Plato's Republic

The Socratic Experience

Go down to the Piraeus with Socrates and Glaucon. Argue whether justice is just the advantage of the stronger with Thrasymachus. Try to stand up to Socrates’s questioning, and discover why Meno called Socrates the torpedo fish. You are Kratinos, a young Athenian, the son of a merchant, with strong opinions and a skeptical soul.

Paris 1945

The Existentialism Experience

You step off the train in the Gare de Lyon two days before Sartre’s lecture that starts the existentialist craze. Hear Sartre declare that existentialism is a humanism in a room so packed that people faint. Argue with de Beauvoir about freedom and collaboration. Drink a Pastis with Camus at the Café de Flore. Listen to Boris Vian play trumpet in the cellars of Saint-Germain. You are Marguerite Langlois, 23, from Lyon, with a letter of introduction to study philosophy with Jean Hyppolite at the Sorbonne.

Oxford 1952

The Ordinary Language Philosophy Experience

You are a young Californian on a Rhodes Scholarship, eager to see what Oxford philosophers are up to. Argue about illusions and other minds at one of J.L. Austin’s Saturday Morning sessions. Talk to Iris Murdoch, Phillipa Foot, and G.E.M. Anscombe about everything that the ordinary language philosophers are missing. Take the train to London and argue with A.J. Ayer about sense data or take a break from philosophy and go listen to some jazz in Soho.

Jena 1799

The German Romanticism Experience

You arrive in Jena as a young theology student from Tübingen, drawn by Fichte's reputation, but Fichte has just been forced out of the University. What do you do now? Attend the Wunderkind’s Schelling's lectures on Naturphilosophie. Argue about irony and art with Friedrich Schlegel and August Schlegel. Meet Caroline Schlegel, the center of the Jena social and intellectual world. Stick around until 1801 and you’ll see Hegel shows up with his fashionable "Titus" haircut (Napoleon's haircut).

Interlocutor tier & above

Become an Interlocutor

Athens, 5th Century BCE: Republic Book II

Interlocutor

The Imaginary City

Glaucon picks up where Thrasymachus left off, and is about to argue that the myth of the Ring of Gyges tells us something about the nature of justice. Socrates begins to build his imaginary city. You are still Kratinos.

Princeton 1947: Gödel's Citizenship Test

Interlocutor

The Logician Goes to Court

You are Albert Einstein. In about an hour you will arrive at a federal courthouse in Trenton where your closest friend, Kurt Gödel, is to be sworn in as an American citizen. Over the past weeks Kurt has been studying the Constitution in preparation for the civics test and, because he is who he is, he has found what he considers an inconsistency: a legal path by which the United States could become a dictatorship. He feels he must explain this to the judge as a matter of urgency. The economist and game theorist Oskar Morgenstern is driving. You have the 45 minute drive, and maybe the hearing itself, to keep the greatest logician of the twentieth century from ruining his chance at becoming an American citizen.

Phaedrus: Writing and Speech

Interlocutor

Should philosophy be written down?

You are Phaedrus, a young Athenian who loves fine speeches. You and Socrates are sitting under a plane tree by the Ilissus on a hot summer day. Socrates is going to argue that writing is bad for the memory, and like an orphan, can’t defend itself. (Of course those arguments didn’t stop Plato from writing down what Socrates said.) What this short simulation explores is: maybe now writing can defend itself and argue back?

Fellow tier & above

Become a Fellow

Edinburgh 1776: Whist with David Hume

Fellow

A rubber of whist at the infidel's table

Evenings in David Hume's house in Edinburgh in 1776 playing his favorite card game. You are the fourth at the whist table with Hume, Adam Smith, and Adam Ferguson (professor of pneumatics and moral philosophy at Edinburgh). The cards are dealt, played, and scored by the house rules: long whist, thirteen cards each. Conversation takes place around and in response to the game. The game keeps score of points and shillings won and lost, and after you play one evening to its end you'll be invited back for another. You can play up until Hume is too sick to continue. Even though he is dying he is still the most cheerful man in the room.

Oxford Tutorial: Early 1950s

Fellow

60 Minutes with an Oxford Philosopher

You have written a short piece of philosophical work — 50 to 500 words, your core argument — and submitted it to one of four Oxford philosophers. Today, at the appointed time, you knock on their door. You have an hour. They have read it. They are not going to be generous with praise. Choose your don: Austin at Corpus Christi, Anscombe at Somerville, Hare at Balliol, or Murdoch at St Anne’s. If you are up for it, you can play through the whole eight week Michaelmas term; dons give reading recommendations for the week’s meeting and remember previous discussions.

Jena 1806: The World-Soul on Horseback

Fellow

Hegel, the Phenomenology, and Napoleon at the gates

It is the night of 12 October 1806. Napoleon's watchfires are being lit outside Jena. The Prussian army is camped in the fog. In a rented room a thirty-six-year-old G.W.F. Hegel has just mailed the manuscript of the *Phenomenology of Spirit* to his publisher, with a friend's money staked on the manuscript reaching the publisher by the 18th. By candlelight he writes to that friend and waits. You are Ernst Mayer, his student and friend. This might be your last chance to talk to him about his book, help him get the manuscript safely away, and argue with him once again about the Emperor whose army is burning the Johannisgasse. If you stick around until the morning, you may even see the world-soul on horseback.

Recent updates

  • 2026-08-20Jena 1799: Updated style based on a bunch of A/B testing with different rules
  • 2026-08-20New Socratic questionnaire/thought experiment in the /lab: Jackson’s Black and White Mary color scientist
  • 2026-08-10Oxford 1952: The Full Term updated with second B.A. structure rather than B.Phil, to reflect tutorial structure
  • 2026-08-09Side-effect effect thought experiment added to experimental segment of the /lab
  • 2026-08-08Many improvements to instructor and student-facing layers
  • 2026-08-04Edinburgh 1776 is now public at the Fellow tier: play a rubber of whist with David Hume, Adam Smith, and Adam Ferguson in the last year of Hume's life
  • 2026-07-31Edinburgh 1776: Adam Smith’s obituary of Hume added to coda
  • 2026-07-26Reconstructing the 1952 Oxford sim from the ground up in the /lab, with a term calendar, more robust to-do list, set tutorials and lectures, and collections at end of term
  • 2026-07-16Adding data viz to instructor layer for thought experiments: see a chart of how students respond, what views they end up with, and what readings they have been recommended
  • 2026-07-13Edinburgh 1776 added to the /lab: play a rubber of whist with David Hume, Adam Smith and Adam Ferguson
  • 2026-07-12Thought experiments in the /lab: Discuss trolley problem and Gettier cases, get recommended readings for the position you end up in

In development

Sit in on Hegel’s lectures on Aesthetics and see the works of art he discusses

Berlin 1828-29: Hegel’s Lectures on Aesthetics

Live through the debates about sense, reference, definite descriptions, and proper names

Names and Descriptions 1918-1970

Step behind Rawls’s veil of ignorance in 1971 America

Original Position 1971

Queen Christina and Descartes, with a focus on the Meditations

Stockholm 1647

Descartes and Princess Elisabeth

Egmond Binnen 1643

Reports from Damaged Life: Adorno, Horkheimer, Brecht, Mann, Schoenberg, Feuchtwanger

Los Angeles 1943