Going to use testing, whether we're going to use testing for people who have been positive but are asymptomatic to go back to work, for example, and these are important questions, and i do think the appointment of tom ingl pgesb, he's got a very good vision where he has to go. we've made some additional suggestions to him about closely linking the test positivity with accessing treatment like the pfizer and merck drugs, and they're i think taking this and working hard at it. >> well, you did suggest they have new markers as this has changed. i mean, notably no one predicted delta and omicron, ...