This is a very important point, because as members opposite have told us on so many occasions, ad nauseam, the border is our first and best defence against COVID slipping into the community. The reality is that it just takes one error. It just takes one mistake. This is not theory. We know this to be the case because we have seen it over the last few months and running back into last year. All it takes is one error or one slip and COVID is caught by someone and then it spreads.