Correcting thegigabytes of digital gibberish that circulate at high speed online is a never-ending task. YouTube removed more than half a million channels last year for broadcasting misinformation. Facebook and Instagram deleted 27m falsehoods about covid-19 at the height of the pandemic. The doughty fact-checking organisations that try to keep the internet honest face more claims than they can handle. How should they prioritise?
This article appeared in the International section of the print edition under the headline “The lie-detectors”
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