 Yeah, so I would say that's very strong circumstantial evidence that the plague was actually able to cause a pandemic. But of course, it's difficult and very dangerous to grow an unknown ancient form of plague in the lab and then test it. So of course, we can't do that. I mean, I have to say, just a few years since the COVID pandemic broke out on us, I think we're more aware of the way that we are vulnerable to an unfamiliar pathogen.