Our Earth Ancestors realized that whether an event or action is good or bad is a judgement call based on one's perspective. As the poster says, the bad becomes good when something worse happens.
Life is filled with the good/not so good activities and events. Our task in life is to learn to cope with each event and then set it behind us and to move forward. We spend our lives learning to live life.
The Ancestors lived their lives, and provided what wisdom they could to their children and grandchildren. We are a product of all that came before.