 But then Barbaro's like, at some point, do we just get to go back to normal? And then McNeil says, look, this pandemic will end when we have a vaccine that we can all take. The vaccine's the thing that's going to end this. But the record we've ever had for producing a vaccine is four years. The fastest vaccine we've ever made was the mumps vaccine. Yeah, the fastest human vaccine ever made was mumps, four years from start to finish.