The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that… — Douglas Adams
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 or repair.
Source: Wikiquote · CC BY-SA 4.0
More from this book
The last time anybody made a list of the top hundred character attributes of New Yorkers, common sense snuck in at number 79.
The thing they wouldn't be expecting him to do was to be there in the first place. Only an absolute idiot would be sitting where he was, so he was winning already. A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.
One of the problems has to do with the speed of light and the difficulties involved in trying to exceed it. You can't. Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws.

