A fascinating, very technical article at Nerd Has Power that explains why SARS-Co-V-2 has to have been engineered in a lab, and, given the nature and history of communist rule, was most likely a biological weapon.

Here’s the gist:

1. In structure the Wuhan virus is 95% like 2 bat viruses (ZC45 and ZXC21), except that it has the proteins that allow it to bind to human ACE-2 proteins. The other two don’t and so cannot infect human beings. The binding proteins occur in the front half (S1) of the spike proteins that stud the surface of the coronavirus like a crown and give it its name. This kind of strong dissimilarity from other coronaviruses in only one part of the viral structure is very unusual, because it would normally take a long time for such a mutation, whereas  the similarity of the rest of the structure can only occur if the viruses aren’t far apart in time. This contradiction rules out natural development and suggests that the Wuhan virus is a chimera created in the lab. Furthermore, the sequence of proteins in S1 is exactly the same as the one which occurs in the SARS virus, which is infectious to human beings. Still odder, there is a piece in the spike protein that allows the protein to be cleaved by a host’s protease (protein-cleaving) enzyme, furin. This addition makes the Wuhan virus much more infectious, as the furin helps the virus divide faster.
2. The only evolutionary event that could create such a striking mutation in only one part of the genome is something called recombination. But it would need a sequence of several highly unlikely-impossible events to occur. And there is not enough time for that to have happened, given that the Wuhan virus cannot have been around for very long, or it would be more markedly different than the other bat viruses (point 1).
3. The evidence supporting a natural origin of the virus was most likely fabricated by Dr. Zhengli Shi of the WIV, in response to questions like that raised in point 1.  What was this evidence? Nothing physical, but simply the sequence – a string of letters – of a bat virus she claims to have come across years ago – RaTG13. But if she had indeed found such a virus with 95% similarity with the Wuhan virus, even to the spike protein, would she not have published something about it then, given the dangers it posed for human beings? But she didn’t. She didn’t even retain the physical evidence. That fact, as well as the fact that it is very easy to fabricate a sequence, and the fact that she, of all people, has a motivation to fabricate, suggests that indeed, RaTG13 is a fabrication.
4. If we admit that the virus is a chimera, then it had to have been made by the CCP, because the 2 bat corona viruses ZC45 and ZXC 21 were both found by a military research lab of the Chinese Communist Party which published its findings in 2018. The CCP owns these viruses and no one else.
5. Zhengli Shi co-authored a paper at the University of North Carolina in 2015 showing that replacing the spike protein so it could bind to ACE2 made coronaviruses infectious to humans. In 2006, there were experiments adding a furin-cleaving site to spike protein since such sites in influenza viruses make for greater infectiousness.