Stupid Sayings

There are many common sayings that are commonly used in everyday conversations. Most of these phrases are completely stupid and don’t make any sense. For example, the phrase “Expect the unexpected”, these means expecting something that you can’t expect because it’s unexpected. How on Earth can you expect something that you can’t expect? By definition unexpected is “coming without warning; unforeseen.” This definition is completely contradicting itself saying to expect something that you cannot expect. So, they should change the saying to “Expect something that could go wrong somewhere are sometime that you might not of predicted but should have because it could go wrong. With contradictions like this how are people supposed to understand the English language completely?