The WHO is in a more difficult position in terms of risk communication and health advice than the national government would be, because its advice goes to every country.
I think Jeremy was right that the mask issue occurred because of evolving science, and some of it.... We just didn't realize that it was such a risk mitigation measure, particularly because there was asymptomatic transmission going on. On the other hand, there are some countries where mask use is not as easy and effective as it would be in other countries. The WHO is in a difficult position.
My advice to the WHO—and I'll state it publicly, and they know it—is exactly what I said before: to actually state honestly what we know and what we don't know, and to express that uncertainty.
If anybody tells you that we are sure of something in this COVID-19 pandemic, you need to take it with a grain of salt. I've said to myself, “Larry, we have to approach this virus with some humility.” That doesn't mean we ignore science. We have to double down on science to try to find the answers, but we do have to have humility, and we don't want to be preachy. We want to explain what the levels of uncertainty are, understanding that people have different risk tolerances and different risk perceptions. They absolutely do. All the science tells us that.