Obviously Skinner is so gifted he doesn't need to learn how to spell "divisive".....I am sorry.....NOT!!!!
There could be one of two reasons my fellow alum, a graduate of Yale, is orthographically-challenged.
One is that he might really have a short-circuit in the cerebral-cells somewhere that causes such spelling mishaps, and no big deal about that; we all have short-circuits of one nature or another.
The other is that people who really don't respect their "audience" don't care if their spelling is sloppy, and never bother taking the time and trouble to correct it.
So either my fellow alum has a short-circuit in the occupied space of the skull, or he has a subconscious contempt for the DUmmies.
Dang, you beat me. Good pickup. Do you want to start a "gifted and talented FR" group?