Set could answer the question? >> look, i don't think there's any one smoking gun in this situation. i mean, that would require e effectively a confession. if this was handling in a laboratory. it would be hard to prove without someone coming forward and telling us what's happened. on the other side, of course, the longer we go and despite all the massive searches for an animal source of this virus and the fact that we -- no one has come up with such a source, obviously increasingly that means the weight of the doubt must be that this did actually come from a labatory. i think we'll be dealing...