crowd averaging systematic cognitive bias

Averaging many opinions does not remove a shared bias

Combining many people's estimates can cancel random mistakes. But if most people make the same kind of mistake in the same direction, averaging their answers keeps that shared bias.

Japanese people were sold overseas

During the 16th and 17th centuries, Portuguese traders bought Japanese people as slaves in Japan and sold them abroad, including in Portugal. Records also describe Japanese women being sold for sexual exploitation.

Europe and Asia have no fixed dividing line

Europe and Asia form one continuous landmass, but no sharp physical or political line separates them. The boundary uses natural features inconsistently and does not follow country borders. Cultural and language differences also vary along a spectrum rather than forming a clear dividing line.

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crowd averaging systematic cognitive bias

Averaging many opinions does not remove a shared bias

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