To fully understand this phenomenon, you must understand the psychology of the English verb can and the auxilliary verb indicating the future: will.
“Can,” in the affirmative, tends to mean: ability, possibility, potential. Stop. Nothing more, Nothing further. Pure hypothesis. Pure abstraction. Nothing concretely visible is happening here. We’re in the pre- stage so to speak. Before. The “not yet.”
“‘Will,” on the other hand, is a belief in the future. It will rain … As the lady says … There’s no doubt about it. Meteorologists.
“What can happen will happen.” … Not exactly … but what Murphy’s law states is the fatalistic truth of a belief in the inevitable:[audio:http://test.paris-savannah.com/wp-content/uploads/EX17011B.mp3|titles=Anything that can go wrong will go wrong]
Anything that can go wrong will go wrong.
What we need to remember is that, like the chances of always winning at roulette, the chances of always “going wrong” are infintesimal. That’s the common ground between disasters and miracles: Surprise. Unpredictability. Or is it just good or bad … luck?
More on Murphy’s law (probably) here.
(Have a good day!)