[wk_end]

If I were saying "bats in southern China with SARS-like viruses are evidence that there are no bats closer to Wuhan with SARS-like coronaviruses", I would be committing the fallacy that you're accusing me of. But that's not what I'm saying.

I'm saying that there's no evidence of any bats closer to Wuhan with SARS-like coronaviruses. And I'm saying that, while it's indeed possible that these hypothetical bats exist - just as it's "possible" that COVID was transmitted to Wuhan via a teapot halfway between here and Mars; that COVID unicorns exist on an undiscovered island somewhere and one sneezed particularly hard and its germs ended up in Wuhan; or that COVID spontaneously formed one day on the apples in your friend's refrigerator in Wuhan - it's, again, not spin for a scientist to refrain from couching everything in uncertainty because of the infinite evidenceless hypotheticals that might disprove it; this is how every single positive statement in science functions. It is indeed correct, scientifically speaking, that there are no apples at your friend's home where you found no apples [based on all available empirical evidence]. And it is indeed correct, scientifically speaking, that Wuhan is 1,000 miles away from the nearest wild bats with SARS-like coronaviruses [based on all available empirical evidence].

[ajross]

> I'm saying that there's no evidence of any bats closer to Wuhan with SARS-like coronaviruses

That's not all you're saying, though. You're extrapolating from that fact to argue that bats closer to Wuhan with SARS-like coronaviruses are therefore unlikely to be present.[1] And no, that's not correct. Viruses span continent-wide gaps all the time, we don't need any special evidence to cite that as a possibility.

[1] Or more specifically, that they're less likely to be present than a man-made descendent. This is how you can spot a poorly justified argument. You're skipping a step and inserting an assumption in exactly the way you need to address a hole in your argument. Again, I pointed out upthread how I can spin exactly the same facts in the opposite direction (IMHO more convincingly, though logically no more sound).

[wk_end]

No, I'm not saying that. Please don't put words in my mouth. I haven't said a single thing here about "a man-made descendent", or whether those bats are "likely" to be present or not. I haven't even said that I agree with Ebright or believe in any kind of lab-leak scenario. All I've said is that your accusation of "spin" - because Ebright simply stated what all existing evidence points to, that the closest candidate bats are 1000 miles away, is the case without qualification - is based on a misunderstanding of how science works. Until there is evidence to the contrary - and there currently is not - it is entirely normal, conventional, and scientific - and not spin! - to state the facts as demonstrated by all the available evidence as facts. In particular, when you say, "we just know what we measured, not what we didn't" - yes, that is science, not intellectual dishonesty.

That said, I'll bite: if there are bats with SARS-like coronaviruses closer to Wuhan, I suspect that the folks in Wuhan who've spent the past 15-20 years studying SARS-like bat coronaviruses, "sampling thousands of horseshoe bats in locations across China" [0], probably would have discovered the ones right on their doorstep, more probably than ones further afield. So sure, yes, I'd wager they're not all that likely (though not impossible)! But, again, that's neither here nor there to my overall point, which is that your accusation of spin on Ebright's part is unfounded and scientifically illiterate.

[0] https://en.wikipedia.org/wiki/Wuhan_Institute_of_Virology#SA...

[ajross]

> Ebright simply stated what all existing evidence points to, that the closest candidate bats are 1000 miles away

You added the word "candidate". I agree with what you wrote. Your framing doesn't imply an incorrect conclusion, though it also lacks any rhetorical punch (probably the reason Ebright skipped it) since we don't have any "candidate" leak evidence either. Good job.