Murphy Law: If bad things may happen, regardless of this possibility, it will always happen and cause the largest possible loss.
A very famous law, my boss often uses it to compare our procedures. "If you feel that your program has bug, then it will have bugs, but also more serious bugs."
We are even smart, and we can't do anything else. All programmers do not have to ensure that the procedures written do not exist. Easy to make mistakes is human and later weaknesses, regardless of technology, the method of use is good, the error will always happen to some places, and the more and the better means of solving the problem, the more serious, so, In the face of such defects, we have to do anything more thoughtful, comprehensive, take a variety of insurance measures to prevent accidental people from changing the disaster and losses. Error is a part of this world, we have to accept the fate of the error, and the error is not always bad, and the mistake is often a successful pad stone, the key is to summarize the mistakes to avoid the same situation.
