“To err is human”, goes the saying. While it is natural for humans to make mistakes, most people make sure that they do not repeat those mistakes, and instead learn from them. These people also make sure that others do not make those mistakes they made.
Some people go a Little Extra, and learn about the mistakes that others committed and the consequences of them so that they do not make those mistakes. Those who learn from other people’s mistakes are doing the smart thing.
There are examples in political and entrepreneurial history where people have made mistakes and learned from them, and also those people who have learned about mistakes others committed in the form of case studies, and news articles.