It pains me to have to do this; xkcd is so often a bastion of sense and logic. But I am called upon to root out muddles thinking and superstition wherever I see it and, my friends, I see it on xkcd. If it were a simple mistake, I could forgive it, but Randall has persisted in his misinformation, even revelled in it.

He leaves me no choice.

I give to you, the truth:

Click to enbiggen.

… or er something.

Suddenly I feel a lot better about myself again. I mean, I might have underestimated the diversity of an important order of mammals, but at least I can tell the difference between a cat and an orange. This guy is either stupid enough that he can’t or stupid enough to think scientists can’t. I’m not sure which would be worse.

In any case, PZ says everything that needs to be said.