happens if what you are predicting, which seems to be perfectly reasonable, which is that there will be an outbreak in china, that covid is going to spread particularly with omicron, then it starts to spread 1.4 billion people, it's going to -- it's going to replicate and where you have massive replication you often have mutations so there's likely to be new variants, and then china is, i suppose, connected enough to the world that i'm assuming that those mutations aren't going to stay in china. isn't that -- isn't that a fear? >> that is true, and the real question is how serious about the variants that evolve? and china is not the only place variants are happening, they're happening all over the world, most of them have no affect, most of them disappear, but in china, i mean, in the world, one of them might arise and be like omicron or delta and that's the real fear.