It happens. I long ago recognized that the best of writers can be guilty of errors and omissions, some more than others, some bigger than others. Be kind and blame it on deadlines. And like all of us, they get prickly when called on it.

Perhaps it has to do with opinion and fact. One is easy to come by, the other is more difficult, but the differentiation is fuzzy. I have long suspected that few of the writers, even the most cherished, breezed through high school physics. Most seem to have a tough time uncorking that bottle without spilling it all over their pants.