> What would you accept as evidence of "no lab involvement"?
Read the last sentence.
Read the last sentence.
Seems pretty straightforward to me. The Chinese said it came from a market, but never found a single animal in that market with COVID.
Apparently "No reports are known to be available for SARS-CoV-2 test results from these mammals at the Huanan market" and "we do not have access to any live animal samples from relevant species" and "The animals on these farms (nearly 1 million) were rapidly released, sold, or killed in early 2020 … apparently without testing for SARS-CoV-2 … Live animals sold at the market … were apparently not sampled either."
What would you accept as evidence of "no lab involvement"?
Not finding such evidence has WithinReason saying "There is also no evidence that the epidemic had no lab involvement."
one cannot prove that ghosts do not exist
Something not very mysterious —
2022 "Wildlife trade is likely the source of SARS-CoV-2"
https://www.science.org/doi/10.1126/science.add8384
2003 "Asymptomatic animal traders prove positive for SARS virus"
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1140695/
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The scary part is that there's every reason to expect this to happen again and again.
Apparently "No reports are known to be available for SARS-CoV-2 test results from these mammals at the Huanan market" and "we do not have access to any live animal samples from relevant species" and "The animals on these farms (nearly 1 million) were rapidly released, sold, or killed in early 2020 … apparently without testing for SARS-CoV-2 … Live animals sold at the market … were apparently not sampled either."
https://www.science.org/doi/10.1126/science.abp8715
So the evidence you require will never be found.
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otoh "Multiple positive samples were taken from one stall known to have sold live mammals, and the water drain proximal to this stall, as well as other sewerages and a nearby wildlife stall on the southwest side of the market, tested positive for SARS-CoV-2."
COVID samples from the market could have come from a human spreader.
Would we hear bat species SARS-CoV-2 could have come from a human spreader :-)