How Science Really Works
Discover how science actually investigates the world, cuts through bias, and uncovers reliable truth. Learn to think like a researcher by testing everyday claims, spotting flawed evidence, and understanding how knowledge evolves.
Like Duolingo, but for How Science Really Works. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
20 levels across 3 sections, about 40 minutes end to end, roughly 8 days at five minutes a day. It moves through Testing Everyday Claims, Separating Real Signals from Noise, and How Scientific Knowledge Builds. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in How Science Really Works
- A scientific question must specify measurable outcomes rather than subjective feelings
- A question is testable only if there is a possible result that would clearly show the idea was incorrect
- Measurable traits like height or count allow direct comparison between conditions
- Vague words like 'better' or 'nicer' hide whether an idea succeeded or failed
- A concrete prediction specifies an exact observable change, such as 'the cake will rise two centimeters higher'
- Specific predictions force you to commit to an outcome before running the test
- Observing natural events lets you spot correlations and recurring patterns over time
- Observing without intervening cannot rule out hidden factors that might be responsible
- To confirm a cause, you must actively intervene and test the suspected factor directly
- Changing only one factor at a time lets you attribute any change in result directly to that factor
- Changing multiple variables simultaneously leaves you unable to tell which one solved the problem
- Holding everything else constant is the foundation of controlled experimentation
- Discovering that a factor has no effect is real progress, not a failed experiment
- A negative result definitively eliminates a potential explanation, narrowing where the truth lies
- Ruling out incorrect ideas prevents other people from wasting effort on false leads
- Without an untreated control group, you cannot tell if an outcome was caused by your treatment or natural recovery
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 How Science Really Works 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.
You want to test a gardening idea like a scientist. Which question can you actually test?
Get it right to open this lesson and 19 more in the app.
Where How Science Really Works takes you
- 1
Testing Everyday Claims
- Asking Questions You Can Actually Test
- Designing a Fair Comparison
- 2
Separating Real Signals from Noise
- Correlation, Causation, and Coincidence
- Spotting Flaws and Biases in Evidence
- 3
How Scientific Knowledge Builds
- Theories, Laws, and Models
- Navigating Uncertainty and Probability
- The Self-Correcting Community
3 sections · 7 units · 20 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
How Science Really Works is taught in the Bestie style: your friend who just gets it. 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.
More Science on Tomo
Thinking Like a Scientist
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The Art of Experimenting
Stop guessing and start discovering! Learn how to test your wildest ideas and turn everyday curiosity into real-world breakthroughs.
How Quantum Physics Works
Explore the strange rules governing nature at its smallest scales. Discover why particles act like waves, how probability replaces certainty, and how quantum weirdness powers modern technology.
Biostatistics for Clinical Research
Move beyond basic averages to design rigorous studies and interpret complex medical data. Learn to handle bias, calculate power, and model survival outcomes like a professional researcher.
How Minds Measure Reality
Discover the hidden math and physics running your senses. Learn why your nervous system measures physical energy in ratios, how to filter signal from noise, and why perception is an exercise in probability.
The Quantum World
Explore the counterintuitive rules that govern the universe at its smallest scales. Discover how superposition, entanglement, and quantum tunneling shape everyday technology and fuel the computing revolution.
Start How Science Really Works today.
Download Tomo, search How Science Really Works, and play your first lesson in under a minute.