 airborne property element to do transmission. So I want to be very strict, and I think we should be very fair in describing the research here. So for me, it's very troublesome to do that research. I want to be very clear. I see 300 gain-of-function kinds of experiments over the last 20 years, and I've seen no civilian benefit for medicine for any of that research. And this is one of the 300, unfortunately.