Thinking Like a Historian
Like Duolingo, but for Thinking Like a Historian. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
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 Historical Claims and Constructing the Past. It starts from scratch.
Free forever · No credit card · iPhone & Android

Key ideas in Thinking Like a Historian
- Historical actors only had access to the knowledge and beliefs of their own era
- Germ theory and microscopic pathogens were not yet discovered in the 1700s
- Judging historical figures using modern science distorts how and why they made decisions
- Major historical eras blend gradually across decades or centuries rather than switching overnight
- Key dates like 476 AD are convenient modern markers, not sudden disruptions to everyday life
- Institutions, language, and culture continued functioning smoothly across textbook turning points
- Vast historical events result from an intersection of political, economic, environmental, and military factors
- Single 'smoking gun' theories oversimplify complex civilizational shifts
- Economic inflation, civil wars, climate pressure, and migrations all shaped Rome's transformation
- A lack of written documentation does not mean society stopped innovating or building culture
- The term 'Dark Ages' originally referred to a lack of written sources, not backwardness or intellectual stagnation
- Materials like wood and oral memory degrade, creating optical illusions of empty centuries
- Historical outcomes were fragile and heavily shaped by chance, weather, and narrow choices
- Viewing current political borders or systems as inevitable erases the real uncertainty felt by participants
- History could have unfolded in dozens of different ways depending on close-run events
- Eye-witness accounts reflect the personal agenda and incentives of the writer
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 Historian 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 didn't doctors in the 1700s wash their tools between patients to stop invisible germs?
Get it right to open this lesson and 11 more in the app.
Where Thinking Like a Historian takes you
See past popular historical myths, interrogate firsthand evidence, and uncover how our understanding of the past is built. Learn the critical moves historians use to separate fact from convenient legend.
- 1
Testing Historical Claims
- Spotting Common Historical Myths
- Interrogating Primary Evidence
- 2
Constructing the Past
- Untangling Causes and Turning Points
- Why Historical Accounts Change
2 sections · 4 units · 12 levels. Built to play, not to enroll.
You pick the voice
Thinking Like a Historian is taught in the 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 History on Tomo
How Historians Read the Past
Move beyond memorizing dates and discover how to interrogate historical evidence like a scholar. Learn to spot archival bias, cross-examine conflicting sources, and dismantle tidy hindsight narratives.
The Historian's Lens
Move beyond memorizing dates and start questioning how the stories of our past are built. Learn to spot bias, compare conflicting accounts, and understand why the 'truth' of history changes over time.
Thinking Like a Historian
Stop memorizing dates and start solving mysteries. Learn how to evaluate evidence, spot bias, and piece together the stories of the past like a professional detective.
The Historian's Detective Kit
Move beyond memorizing dates and start uncovering the 'why' behind the past. Learn to spot bias, decode propaganda, and piece together the hidden stories that shaped our modern world.
The Secret History of Great Wealth
Ever wonder how the world's richest families actually built their fortunes? Go behind the scenes of history's biggest bank accounts to see the moves they made and the systems they used.
Athena: The Goddess of Wisdom
Step into the sandals of the most powerful goddess in Olympus. Learn how to think like a strategist, win your battles with brains over brawn, and discover why Athena is still the ultimate symbol of wisdom today.
Start Thinking Like a Historian today.
Download Tomo, search Thinking Like a Historian, and play your first lesson in under a minute.