Re the "Wuhan coronavirus contains sequences from HIV, and that can't be accidental!" paper. I've read it, it's interesting, but I'm unconvinced. The supposedly HIV-origin sequences are very short, it's not clear how big a database they searched to find them, and there seems /
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to be NO ANALYSIS AT ALL of how likely it is that such a match could be found by chance - which I grant is a tricky question because I don't know the distribution of such sequences occurring randomly in nature, but these researchers ought to know something about that.
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Even if those sequences really did come from HIV instead of arising by independent chance, the researchers throw out the whopping claim that that means they were put in artificially, without mentioning a number of other possibilities obvious to me even as a non-specialist.
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For instance, that bits of genome could have mixed in a human or animal infected with viruses related to both HIV and the ancestor of Wuhan coronavirus. That kind of thing happens a lot; HIV is a retrovirus that modifies other genomes; and it's as plausible as lab creation.
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Further to that - the authors say in a couple of places that they scanned "all viruses" for the mystery sequences. That in itself is a Hell of a claim; presumably they mean all viruses in some specific database, but they should say so much more clearly...
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...and they found the sequences in Wuhan coronavirus and in HIV, and in no other viruses. But before concluding anything big it seems obvious that they ought to scan many possible host organisms; even more likely places for viruses to pick up genetic material than other viruses.
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