From an economic point of view, sustainability is about maintaining a high quality of life for future generations. To see how difficult this problem is to address, try to answer the following questions: From a quality of life viewpoint, point would you rather have been born in 1930, 1960, or 1990? Assume that you would have been born in the same country and region, but that you don’t know your parents’ income, or your gender or race, ahead of time. If you prefer 1990, this may suggest we have been on a sustainable track until now. Does it also imply that we are currently on a sustainable track? If you prefer an earlier year, what unsustainable decisions did your parents’ or grandparents’
generations make?