Thinking about what the changes would be if the life span was 400 years brings a lot to the table. Our society has been built up in the belief that life is short and you get to enjoy it only once. But, what if that is not the case in our world, and you can live for four centuries? The first things that came up to my mind are the issues that we would get because of the overpopulation and the lack of resources. However, we could solve the problem by raising the awareness of when is a good time to have children. This leads me to think that the generation gap would be amazingly big since the people would take their time before having a baby. Another thing that would change is our conception around education due to the fact that we have more time to explore and learn.  In this environment where everyone lives enough to mature, we can develop a better society with better values. In conclusion, considering all the differences that our civilization would have suffered if the life span was longer is an interesting topic. Personally, I would love the idea of having more time to contemplate life and enjoy my family.