Why does multiple perspectives fail?

The most common reason multiple perspectives fails: Collecting perspectives performatively — asking for input you've already decided to ignore. If you seek other viewpoints only to confirm what you already believe, you're running confirmation bias with extra steps. The test: did any perspective you collected actually change something about your decision or design? If the answer is consistently no, you're not perspective-taking — you're perspective-collecting.

The fix: Pick a decision you've recently made or a design you've recently shipped. Write down your perspective in two sentences. Then ask three people with different roles, experiences, or stakes to describe what they see. Write each perspective on a separate card. Compare them side by side and mark anything that appears in their observations but not in yours — these are your blind spots on this specific problem.

The underlying principle is straightforward: Seeking other viewpoints shows you what your single perspective cannot.