Why should you verify a Claude answer before relying on it for something consequential?

The principle — fluency and correctness are separate things, and a confident tone is not evidence.

Why the key is correct — Claude can be wrong while sounding certain, and its own knowledge stops at a cutoff. That combination is why anything legal, medical, financial or about to be published deserves a check against the source.

Why the others are wrong — answers are not written by other users, the risk is not confined to free accounts, and nothing expires on a timer.

Remember this — check what matters, and supply current material for anything recent.

Sources — Anthropic's guidance on web search citations, which exists so sources can be verified.