“It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so.”
ain't so is where you learn to challenge misinformation with confidence. Fact-check claims in the Combat Trainer, settle disputes live in the Arena, and read the receipts in the Truth Stream.
The platform
One platform, four ways to fight back.
Everything you need to spot a bad claim, respond to it well, and keep learning — built to work together.
Turn a shaky claim into a clear, sourced reply.
Paste anything you've seen online and the Combat Trainer checks it against live sources, tells you whether it holds up, and drafts three replies in different tones — so you can respond calmly and credibly instead of arguing in circles.
- Fact-checked verdict: supported, refuted, or uncertain
- Real sources behind every verdict
- Three reply styles — curious, direct, or de-escalating
No sign-up required to test a claim.
Refuted. Brain-imaging studies (fMRI and PET) show activity across virtually the entire brain over the course of a day — not every region at once, but there is no dormant 90%.
That's a popular idea! Out of curiosity, where did the 10% figure come from? Most brain scans I've seen show activity right across the brain.
That's a myth. fMRI and PET scans show we use virtually all of the brain — just not every region simultaneously. There's no idle 90%.
It's a really common belief — it shows up in movies all the time. The good news from the neuroscience is that nearly all of your brain stays active throughout the day.
Settle it with a real debate, not a comment war.
Two people, timed rounds, and an AI judge that scores facts and sourcing over volume — while the audience votes for who argued best. Bring a claim from the Combat Trainer and put it to the test.
Timed rounds
Structured turns keep it focused.
AI judge
Scores facts, logic, and sources.
Audience vote
The crowd picks its champion.
Leaderboards
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Truth Stream
Latest from the front lines.
Fact-checks, reporting, and debunked claims — each one backed by its sources, updated daily.
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