Thinking Like a Scientist
Discover how to investigate the everyday world using the sharp toolkit of science. Learn to turn hunches into fair tests, spot misleading coincidences, and know when the evidence says to change your mind.
Like Duolingo, but for Thinking Like a Scientist. 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 Your Hunches and Judging the Evidence. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Thinking Like a Scientist
- Everyday claims often rely on subjective feelings like 'better' or 'healthier'
- Scientific investigations turn vague qualities into concrete, measurable numbers like time, count, or physical markers
- A scientific explanation must make predictions that an experiment or observation could potentially show to be false
- If a claim is set up so that no possible evidence could ever contradict it, science cannot test or use it
- A single success story shows an outcome happened, but it cannot rule out coincidence, the body's natural immune response, or the placebo effect
- Science requires comparing many cases against a group that did not receive the treatment to measure real effectiveness
- Deciding in advance what result would prove a hunch wrong stops investigators from explaining away unwanted results
- Confirmation bias leads people to focus only on data that supports what they already hoped to find
- A testable scientific prediction links a specific condition (like temperature or moisture) to a specific, observable result
- Broad guesses like 'improves health' or 'responds emotionally' do not specify what conditions to set up or what changes to watch for
- Changing only one factor at a time isolates its specific effect
- When two or more factors are changed simultaneously, any measured outcome could be caused by either factor or their combination
- Scientific comparison relies on keeping all other conditions constant
- A control group undergoes the exact same environmental conditions without receiving the experimental treatment
- Without an untreated baseline, you cannot tell if the outcome was caused by the treatment or by external factors like humidity, age, or natural wear
- Human belief and anticipation can trigger measurable physical relief and psychological changes
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 Scientist 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.
A friend claims a lavender spray helps them sleep better. How would a scientist test that claim?
Get it right to open this lesson and 11 more in the app.
How to learn Thinking Like a Scientist, step by step
Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.
- 1
Testing Your Hunches
- Turning Hunches into Testable Questions
- Designing a Fair Comparison
- 2
Judging the Evidence
- Separating Coincidence from Cause
- Knowing When to Change Your Mind
2 sections · 4 units · 12 levels. Built to play, not to enroll.
Questions about Thinking Like a Scientist
How do I learn Thinking Like a Scientist?
Go in order: start with Testing Your Hunches, then Judging the Evidence. On Tomo that's 12 short levels, about 24 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for Thinking Like a Scientist?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. Thinking Like a Scientist is one of its free courses, and you can type any other topic to get a course of your own.
Is the Thinking Like a Scientist course free?
Yes. Thinking Like a Scientist is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn Thinking Like a Scientist?
12 levels across 2 sections, about 24 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start Thinking Like a Scientist?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
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 Scientist 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 Scientist today.
Download Tomo, search Thinking Like a Scientist, and play your first lesson in under a minute.