The correct answer to this open question is the following.
You did not include the information about the unit you are referring to, neither the context, links, or some other reference.
However, trying to help you, we can answer in the following general terms.
“What can one generation learn from another?”
Everything is the answer. If we live life well worth of living, with ups and downs but always learning the lessons, that experience is what we can teach the next generation so they will be able to avoid the mistakes we made as a generation and never repeat them.
This advice can help family members of different generations to learn from one another because humans are creatures of habit, sentenced to repeat failures again and again. It seems that we do not understand the lesson. That is why it is very important to listen to what the older generation has to say about the important things in life. If we pay attention, we can correct the course of action and make better decisions under similar circumstances.