Hubris is dangerous in the classroom. The student that believes nothing can be learned that isn’t already known catches nothing. The instructor that believes in an all-knowing prescience guarantees nothing worthwhile is cast for the capturing. That battle between student and teacher can dangerously become a war between good and evil — and that fight leaves no winners on the field of learning.
Do, you, like, to, use, commas, as, if, they, are, running, out, of, style? I don’t like commas and I avoid them.
My students, on the other hand, as well as many amateur authors, use commas as if they were free by the bushelful and need to be crammed into every bramble and sigh. I never add a comma before an “and” though many people employ a comma there.