So that's one question the Minister hasn't answered to date about the purpose of the bill and what the relationship between testing and vaccination is in achieving the purpose. Has, for instance, the Government got any guidance on what frequency of negative tests might give a person equivalent assurance that a person who is not vaccinated is just as unlikely to pass on COVID-19 to them? It's a very important number, and you'd hope the Government sought some data on that, so I'll leave that for now. But that's a question that hasn't been answered and that the Minister should get up and answer. 