How do you fact-check something AI told you?

Use the three-source rule: find the same fact on at least two other independent sources before trusting it. Check whether those sources are credible, look for the original evidence, and always ask 'Does this person have real expertise on this topic?'

The fastest way to fact-check AI is the three-source rule. When AI gives you a claim, search for that exact claim on Google. If you find it stated on multiple independent, credible sources, it's probably true. If you can't find it anywhere else — or only find it on sketchy sites — be skeptical. Look at the original source of the information, not just repeats. Check whether the author has expertise. If something is truly important, consult an expert rather than relying on AI or the internet alone.