Accelerated mutation and selective evolution is still a natural process. Even assuming there was absolutely no human interference with the evolution of this virus whatsoever, this still doesn't mean it is not a bio-weapon. A naturally evolved virus can still be intentionally released and used as a weapon. Nothing I am saying is even remotely debatable, it is fact.
An "accelerated forced mutation process done by raising many generations of the virus in a targeted environment" is in no way a "natural process." Natural selection is a natural process, which is what the article says was likely to be the case.
You have zero evidence that it is a "bio-weapon" -- that remains conspiracy-driven nonsense. The article concludes that it is likely a virus that either
a. evolved in an animal species through natural selection to be transmitted to a human, or
b. transmitted to a human in a non-pathogenic form and evolved to a pathogenic one afterward.
You are free to argue against the findings of people who actually know what they are talking about in order to keep pressing your own conspiracy theory, and I am free to point out that it relies on nothing but baseless beliefs and a general misunderstanding of biology.
Even if we were to go into the thought process that this was a bio weapon, and to ignore the evidence suggesting the other side of things. Here's where we would get with that.
Who is this bio weapon for? China? China was ravagaed by this virus and many people were infected and died in China. Was it Iran? Same thing happened to them. Who would do this that isn't going to be effected by it in some way? I don't know, this is not something you'd, be able to control and just set it upon one person.
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I don't have to ignore anything. That paper is not exclusive of it being a bio-weapon, naturally evolved or not. The critical flaw with your logic is you assume the people responsible would give a fuck about the general population, even if it was their own host nation.
They also lie. There is no way the disease spread exponentially, and then suddenly flatlined. It is just not possible.