We're far enough into this pandemic that I'm seeing something interesting happen. Epidemiologists start talking about a new result, such as the NEJM paper on a high rate of asymptomatic positives presenting for delivery in NYC, and discussing what that means.

Then someone jumps in and accuses them of hypocrisy or incompetence. "You just said probably X, but two weeks ago you said probably not X. You're a fraud, just like all of you experts!"

Here's the thing. These people are doing science. In science, it's not hypocrisy to change your mind based on new evidence. It's literally the entire purpose of the enterprise.

Much of what we believed a month ago we still believe. Some of it we don't. That's how science works.