A second review is useful when it makes assumptions and disagreements visible, not when it creates the impression that another answer automatically wins.

Make disagreement useful

A second opinion is not valuable because it automatically wins. It is valuable when it challenges an assumption and leaves a record of what the responsible person decided.

A compact decision record should capture what the second review challenged, the evidence behind that challenge, the human disposition, the reason, and what new evidence would require another look.

Where AI fits

AI can organize the scope, evidence, recommendations, dissent, open risks, and re-review conditions from a selected review.

The human decision

People retain authority to accept, reject, or defer recommendations and record why. Another model or reviewer does not automatically decide the outcome.

The lesson

A second opinion helps when disagreement becomes evidence in a traceable decision, not a ceremonial extra vote.

The Build Log companion describes a second design review where useful challenges were accepted, rejected, or deferred with reasons and re-review triggers.