Popperian AI

Stress test any claim

Enter any statement and AI will rigorously challenge it from every angle — finding counter-arguments, building defenses, and searching for real evidence — until all arguments are exhausted.

1 Challenge — counter-arguments
2 Defend — refute each challenge
3 Deepen — stress-test defenses
4 Verdict — how well does it hold?

Karl Popper meets AI

Adversarial Testing

AI generates the strongest possible counter-arguments against your claim, then defends it, then challenges those defenses — three layers deep.

🔍

Evidence Grounded

Every argument is backed by real evidence from web search — peer-reviewed studies, institutional reports, news sources. Credibility is tracked and weighted.

Two-Axis Verdict

No fake precision. The verdict tells you how rigorous the testing was AND how the claim survived — from Intact to Collapsed. Plus a falsifiability check.

See it in action

Claim tested
"The Earth is flat"
Rigorous Collapsed

The flat Earth claim was thoroughly disproven by multiple lines of scientific evidence from NASA, physics, and navigation systems.

114 sources · 16 peer-reviewed · 40 arguments
Claim tested
"Regular exercise improves mental health"
Rigorous Refined

The claim holds but needed qualification — exercise addiction, gym anxiety, and injury risks create exceptions for vulnerable populations.

117 sources · 87 peer-reviewed · 40 arguments