I believe it is more complicated than that as a metaphor. It is because one form of bias will lead or complicate another. So, even if one or two biases by themselves may not seem to “add up”, one working or leading to another will complicate matters and cloud our vision and decision making.

Associate Professor of Epidemiology and Environmental Health at the University of Canterbury, New Zealand. Also in: https://refind.com/arinbasu

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