Diverging Opinions
人们面对相同证据常得出相反结论，且分歧在信息公开后仍持续。实验表明，二维信息形成一维意见时分歧出现，但足够信息下分歧仍存，源于对他人决策能力的过度怀疑。
People often see the same evidence but draw opposite conclusions, becoming polarized over time. More surprisingly, disagreements persist even when they are commonly known. We derive a model and present an experiment showing that opinions can diverge when one-dimensional opinions are formed from two-dimensional information. When subjects are given sufficient information to reach agreement, however, disagreement persists. Subjects discount information when it is filtered through the actions of others, but not when it is presented directly, indicating that common knowledge of disagreement may be the result of excessive skepticism about the decision-making skills of others.