For the latest episode in our series about the hold of bad ideas, we welcome back the geneticist Adam Rutherford to talk about Linnaean taxonomy, a seemingly innocuous scheme of classification that has had deeply pernicious consequences. From scientific racism to social stratification to search engine optimisation, taxonomy gets everywhere. Can we escape its grip?

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Next time on The History of Bad Ideas: Helen Lewis on women against the enfranchisement of women.

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