Wear a temperament
In the app, your answers choose. Here, you can.
The challenges
Recognised philosophy, dramatised as a story. Each one forks three times, and every answer you give has to survive the other mind.
Tap an ending to walk its route.
The shape of every puzzle
The broad fork: two answers to the puzzle's question, and you take one.
A new situation, not a harder version of the first. What you said a moment ago decides what you face now.
The last fork presents the bill for the position you've built, and asks whether you'll still hold it.
Play one now · In your browser
Not one plank from the first voyage is left. Is it still the same ship?
The whole puzzle, from Plutarch's ship to the close: three forks, the other mind at every one, a real three-second HOLD, and the leaning your route earns. Finish it and this site takes on your temperament.
Take a sideFree in the app
Every install comes with these ten, and a new challenge arrives every day. Open one to see its first fork.
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
Weighs on
After the close
Every fork and every claim, kept exactly as you argued it. Tap any answer on the tree, even the ones you didn't pick, to read the argument you'd have run into.
The books and papers behind each argument, each with a note on what you'll find there and a link to go further.
2 Minds Premium
The daily challenge stays free. Premium opens every problem published so far, and every one to come, the moment it's published.
Subscribe in the app. Cancel any time from your store account.