- Nothing is as easy as it looks.
- Everything takes longer than you think.
- Anything that can go wrong will go wrong.
- If there is a possibility of several things going wrong, the one that will cause the most damage will be the one to go wrong.
- If anything just can not go wrong, it will any way.
- If there are four possible ways in which a thing can go wrong, and you
prepare for these, then a fifth way, unprepared for, will promptly develop.
- Left to themselves, things tend to go from bad to worse.
- If everything seems to be going well, you have obviously overlooked
something.
- Nature always sides with the hidden flaw.
- It is impossible to make things foolproof, because fools are so
ingenious.
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