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.
Douglas Adams (2012). “The Hitchhiker's Guide to the Galaxy: The Trilogy of Five”, p.691, Pan Macmillan
![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.](http://cdn.quoteddaily.com/images/douglas-adams/the-major-difference-between-a-thing-that-might-go-wrong-and-a-thing-that-cannot-possibly-go-wrong-is-that.jpg)