That is interesting, but where does it come from? It's not in the OP or in the research paper, at least not in the summary, abstract, or conclusion, or in other

That is interesting, but where does it come from? It's not in the OP or in the research paper, at least not in the summary, abstract, or conclusion, or in other parts I skimmed. https://www.science.org/doi/10.1126/science.adi1563 https://www.science.org/doi/10.1126/science.adi1563