June 13, 2021, 4:30 a.m.

(The Guardian) Conspiracy theories on origins distract from tackling the pandemic and boost tawdry blame gamesIn the storm of disinformation since the emergence of Covid-19, the assertion that the virus is human-created has lingered on the fringes. This outlandish conjecture, once confined to conspiracy theorists, has undergone a renaissance after Joe Biden’s insistence that scientists should investigate the possible lab origins of Covid. From Vanity Fair to the Washington Post, the theory has been given a veneer of respectability.But there is an essential caveat that has been overlooked – that two different hypotheses are possible does not make them equally likely. Occam’s razor is a general rule of thumb, an injunction to “keep it simple”; when confronted with competing explanations for events, it is usually sensible to adopt the interpretation that pivots on the smallest number of supplementary assertions and assumptions. Continue reading...

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