Nor am I. It's notable though, that I have seen no indication that Apple is attempting to prove the patent is invalid (in spite of all of those in this thread that claim it is invalid). That says to me that Apple might think they would have a hard time claiming invalidity.
That might also explain why they used the stupid tactic of ridiculing the plaintiff rather than arguing the case on its merits. Perhaps it was because they had no case to argue on the merits. Maybe ridicule was their best shot.