Ah statistically significant here just means the uplift is due to wearing one vesus not wearing one, it doesn't suggest a significant benefit to public health. My day job is explaining this to marketeers, so you're quite correct, but it's common to overstate the benefit which is, from what I have seen and read, marginal. Hence why I said the main reason to legislate to make people wear them is for visibility and public confidence. I'm not saying they don't help, they do, what I am saying the benefit is relatively small and the principal rationale for them is control. You might not agree with SAGE but this was the arguement that won the day. They were deemed essential to gain compliance in other areas, hence this will never end, while masks are worn, and there's quite a lot of scientists keen to ensure we keep wearing them to tackle flu. It's up to you (from the 19th)!