Checking Understanding Through a Question
Launch library · evergreen read

Restating what a subject has just said, then asking whether that restatement is accurate, does more than confirm a fact. It shows the subject that their words are being taken seriously enough to be checked, and it often prompts a correction that sharpens the answer considerably. This habit matters most whenever an interviewer suspects their own grasp of a subject may be incomplete.
The technique is especially useful with technical or unfamiliar subject matter, where an interviewer's own understanding may be shakier than they realise. Asking a subject to confirm or correct a plain restatement is far less embarrassing, for both parties, than publishing a misunderstanding discovered only after the sitting has ended. A subject asked to confirm rather than repeat an answer often adds a detail that sharpens it further.
Done well, this kind of check reads as attentiveness rather than doubt. The tone matters: framed as genuine curiosity about getting it right, rather than as a challenge to the subject's honesty, it tends to be welcomed rather than resented. Framed with genuine curiosity, this small check tends to be welcomed rather than read as any kind of doubt.