> Once thing the lab leak theory would explain is that why the virus was so unexpectedly infective right from the start. There's nothing unexpected about Covid

> Once thing the lab leak theory would explain is that why the virus was so unexpectedly infective right from the start. There's nothing unexpected about Covid being infective because spread in humans is why we took note of it and are currently discussing it. That is, we're discussing P(human infectiousness | human epidemic). If we _randomly selected_ a virus from amongst _all_ viruses, then yes, P(human infectiousness) would be expected to be low, but we're not doing that. The former is plain selection bias (by which I mean the technical error; I'm not accusing you of bias).