The First Ground Rule for Calling Bs

Jevin and karl say they're careful as they teach their course to walk a fine line. The first ground rule, if you're going to correct someone who's wrong, it's to make sure you're right. Jevan says, start with the common ground. Karl used the example of vaccines as one that's really charged, but also really important. There's no scientific link between vaccines and autism - yet some believe there is.