Adam Hano, Epilogue, Question 1

In the Epilogue Charles Wheelan explains what will our society's main concerns be in 2050. What was the most interesting for me was the question about productivity. Charles makes the case that if the productivity grows (as now is growing) then we will have to choose whether to work the same for more wealth or work less for the same amount of production as today. 

Furthermore, Charles brings back the question of Inequality. Today, still more than billion people live on the edge of poverty. How are we going to solve this problem in the future?