Epistemic means relating to knowledge: how we know what we know, what counts as real knowledge, and whether we can trust what we think we understand.

When scientists design an experiment, they face epistemic questions: Will this test actually prove what we think it proves? Can we trust the results? If you read two news articles that completely contradict each other, you're dealing with an epistemic problem: how do you figure out which one is accurate, or whether either one is?

Philosophers use it when debating deep questions: How do we know anything for certain? What's the difference between believing something and actually knowing it? If everyone in ancient times believed the Earth was flat, did they truly know it, or were they just wrong together?

You encounter epistemic questions more often than you might think. When your friend insists they saw something incredible but has no proof, you're wrestling with an epistemic issue: Do you believe them based on trust alone? When you're researching a topic online, deciding which sources are reliable is an epistemic challenge. The question isn't just what you know, but how you know it and whether your method of knowing is actually reliable.