If you do not regularly read Max Kennerly's Litigation and Trial blog you are not taking advantage of a wonderful opportunity to learn. I have never met Max, but his blog is well-written, thoughtful, and informative.
Need to be convinced? Read his post titled "Always Draft Angry Briefs. Never File Them."
We've all been there. We've all read briefs and heard oral arguments that were (at least to us) irrelevant, unfounded, or directly contradicted by controlling precedent or the plain meaning of the statute. ...
But a brief is no place to question the intellect or motives of opposing counsel. Get mad, then get over it.
Excellent advice from which all can benefit. Thanks, again, Max.