The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair.
“If you can keep your head when all about you are losing theirs, it's just possible you haven't grasped the situation.”
“I had a Shiatsu dog for 12 years - we were different in size but he was certainly man's best friend, he was my little guy.”