Aargh. I don't expect most of the press to be good at science reporting, but that's egregiously bad, and dangerously so. There are too many people who are eager for anyone and anything that will tell them that what they want to do is safe enough.

The Microcovid project's calculator is limited, but that's probably inevitable. Things it couldn't handle well included getting a ride from two fully vaccinated people, one of whom is being tested weekly, and anything in Canada. With both of those, I was mostly poking at it to see how it worked: The calculations for flying to and from Canada are different from a hypothetical domestic flight, because of the vaccination and testing requirements for crossing the border.