The silence that was not agreement

A meeting of eleven people approved a plan unanimously. Interviewed separately afterwards, seven of them said they had thought it was a bad plan.

None of them had lied. Each had looked around a room in which nobody was objecting and drawn the obvious conclusion: that they were alone in their doubt, and that stating it would be both useless and costly. The mechanism works without anyone intending it. The first person to speak sets a direction, the second finds it harder to be the first objector, and by the fourth the silence has become evidence in its own right.

Research on this effect gives two reliable interventions, and both are structural rather than personal. The first is to collect views before discussion: a written round, one line each, submitted at the same time. People who have committed a doubt to paper state it aloud far more readily, and the count of doubts is visible before anyone has anchored the room. The second is to assign the objection to a role. If one named person is required at every meeting to argue the strongest case against, dissent costs nothing, because it is somebody's job rather than their opinion.

Neither intervention asks anyone to be braver, which is why they work. Advice to speak up is addressed to the person for whom speaking up is most expensive, and it transfers a group's design failure onto an individual's character.

The diagnostic is simple enough to use anywhere. If a decision was unanimous and quick, ask how many minutes passed before the first objection. If the answer is none, what the meeting measured was the order in which people spoke.