The first opinion wins not because it’s the smartest, but because it arrives before the group’s attention budget is exhausted. When a senior voice offers a solution early, listeners treat it as a signal that the problem is solved, so they stop listening to later contributions. This “first‑impression lock” is reinforced by the brain’s preference for mental shortcuts: the earlier a suggestion appears, the more it is tagged as relevant, and the harder subsequent data must work to overturn it.

In a product design sprint, a senior designer presented a layout concept within minutes of the brief. The team spent the rest of the session polishing details rather than testing alternatives, and the final product later flopped because the initial premise ignored a critical user need. The lock persists because it conserves cognitive effort and protects senior status, but it also creates blind spots that erode decision quality.

The remedy is not to wait for every voice before moving forward, but to deliberately pause and solicit a second, independent round of ideas before any verdict is recorded. That pause forces the brain to reset its shortcut, opening space for alternatives that might outperform the first suggestion.