What historical event have no life lesson in it?

One example of an event that may not have a clear lesson could be a natural disaster, such as a volcanic eruption or an earthquake. While these events can have a devastating impact on the people and communities affected by them, they are often seen as acts of nature and are not directly caused by human actions. In this sense, the lesson to be learned may be more focused on disaster preparedness and emergency response, rather than a moral or ethical lesson.