IOW: There is no certainty in this world, all your theories and expectations notwithstanding!
If your car does not start in the morning, who you gonna' call: a mechanic, a witch doctor, or a philosopher?
The answer to this question will provide a large hint to which "theory" you should follow when the rubber hits the road (or fails to hit the road in this case).
Oh for heaven's sake, Coyotemen -- of course I'm going to call my mechanic, George. Do you think I'm stoopid or sumthin'?????
Good night and pleasant dreams, Coyoteman!