Then 'it was not serial passage' theory is unfalsifiable (sorry for the double negation): * If a wild strain is too far away from covid, then it would have tak

Then 'it was not serial passage' theory is unfalsifiable (sorry for the double negation): * If a wild strain is too far away from covid, then it would have taken too long to do the passage. * If a wild strain is almost identical to covid, then obviously covid derived from that without seeing the interior of a lab. Under what circumstances would you consider that serial passage work done in a lab might have had something to do with covid?