Granny loves Murphy's Laws. They apply everywhere! You'll find some scattered throughout Granny's pages, but they all lead back to the original law: If something is going to go wrong, it will.
Basic Murphy's Laws
Anything that can go wrong will go wrong.
Left to themselves, things tend to go from bad to worse.
Nothing is as easy as it looks.
Everything takes longer than you think.
If anything simply cannot go wrong, it will anyway.
If you perceive that there are four possible ways in which a procedure can go wrong, and circumvent these, then a fifth way, unprepared for, will promptly develop.
If everything seems to be going well, you have obviously overlooked something.
Whenever you set out to do something, something else must be done first.
Every solution breeds new problems.