Murphy's law says that anything that can go wrong will but I would like to draw emphasis to the tense in which this law is spoken and change just that. When you are talking about anything that can go wrong, I believe you are talking about limitless possibilities. I don't believe in planned destinies. As people, we make decisions and for every decision we make there are consequences or at least subsequent events.
In order for everything that can go wrong to actually go wrong, you would have to be able to make every possible decision at the same time. You would have to cover all bases. Break off into multiple dimensions. Because, at any given time, you could be presented with decisions that have more than one or two outcomes. Each outcome can go wrong in multiple ways so long as you don't believe in having only one planned, mapped out "destined" future.
Looking back, however, if we were given the same decisions to make in the same circumstances like going back in time, I believe we would make the same decisions because we would have the same information, same experiences and same state-of-mind. I don't think our life decisions are mapped out until after we've already made them. It's almost like Timequake by Vonnegut. Except for when they go back in time, they still have a memory of what happened the first time. And, even if they wanted to make new decisions, given their knowledge of the outcomes, they simply couldn't because they were forced to stick with the "map" that they already created living through that time once.
I think, if you blame all the wrong stuff on Murphy's law, you are slacking to acknowledge your own faults. It's easy to brush your mistakes off, saying that anything that could go wrong did, and leaving it at that. Own up that things may have gone better if you made different decisions. Admittedly, this is how we learn as people.
A friend posted on Facebook, "