Commentary It increasingly seems that COVID-19 was engineered in the Wuhan Institute of Virology. It’s not just that the virus’s “furin cleavage site” doesn’t match potential natural precursors. It’s that we now know of discussions among scientists, including some connected to the Wuhan lab, about precisely such experiments. Surely it is worth discussing. Or so you’d think. But remember, when the virus first got loose, the weight of reputable opinion was strongly against this notion. Which these days doesn’t mean they argued against it. It means they tried to stop anyone arguing for it. It isn’t now obvious why. And if you ask the people then yelling at us not to whisper about this possibility, they may deny ever having done so. But it is a matter of public record that Facebook, YouTube, and Google labelled it fake news and tried to suppress any discussion of it. And Wikipedia still …