Role prompting and its limits

Also called: persona prompting, act as a

DEFINITION

Asking a model to 'act as' a role can usefully shape style and framing. It does not grant real expertise, credentials, or access to facts the model doesn't have.

WHY IT MATTERS

'You are a senior lawyer' produces lawyer-sounding text, not legal reliability. Treating persona as proof of authority is a common way people over-trust confident output.

COMMONLY CONFUSED WITH

Genuine domain grounding. Expertise comes from correct sources and review, not from a costume in the prompt.