Thinking Like a Philosopher
Learn the practical mental tools philosophers use to dissect complex questions, spot hidden assumptions, and make tough decisions. Transform everyday disagreements and uncertainties into opportunities for sharp, independent thinking.
Like Duolingo, but for Thinking Like a Philosopher. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Testing What You Believe and Choosing How to Act and Live. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in Thinking Like a Philosopher
- Philosophical disagreements often masquerade as debates over facts when they are actually conflicts over definitions
- Words like 'fair', 'free', and 'natural' carry multiple conflicting meanings that speakers assume are universally shared
- Clarifying how each person defines the core value resolves stubborn standoffs faster than debating data
- Socratic inquiry examines the underlying rule or criterion used to reach a judgment rather than attacking the judgment itself
- Asking for a standard invites the speaker to define their metric instead of making them defensive
- Attacking a claim directly usually causes people to dig in and protect their conclusion
- Philosophers use extreme counterexamples specifically to test whether a rule holds universally as a principle
- If a rule fails at its outer limits, it is a situational preference or rule of thumb rather than an absolute principle
- Pushing a statement to its boundary separates genuine logical commitments from convenient opinions
- Socrates treated acknowledging your own ignorance (aporia) as the starting point of wisdom
- False certainty blocks real inquiry because people do not investigate things they assume they already understand
- Steelmanning means building up an opponent's argument to its best possible version before responding
- Testing your own philosophical position against the strongest counterargument proves whether your reasons actually hold up
- Defeating a weak or distorted version of an argument (a strawman) gives false confidence in your own position
- Thought experiments deliberately remove real-world clutter like panic, legal risks, or lucky escapes
- Stripping out extra variables forces you to confront a single moral or conceptual principle directly
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Thinking Like a Philosopher the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Why do everyday words like 'fair' or 'natural' cause so much confusion in debates?
Get it right to open this lesson and 11 more in the app.
Where Thinking Like a Philosopher takes you
- 1
Testing What You Believe
- Uncovering Hidden Assumptions with Socratic Questions
- Stress-Testing Beliefs with Thought Experiments
- 2
Choosing How to Act and Live
- Resolving Conflicts Between Consequences and Principles
- Constructing Meaning in an Indifferent World
2 sections · 4 units · 12 levels. Built to play, not to enroll.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Thinking Like a Philosopher is taught in the Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Thinking Like a Philosopher today.
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