Interesting chart(1) and interesting article on some of the implications of cognitive decline for people and (the American) society; and the opportunity for digital enhancements.
My favourite excerpt:
If you don’t like the decisions voters make now, think of what it will be like as the percentage of voters with cognitive impairments grows. The share of impaired elected officials may grow, too. After all, Donald Trump will turn 70 next year. Hillary Clinton will get there in 2017.
Can ageing societies continue to rise their collective intelligence?
(1) David Laibson: The Age of Reason, See also:
Agarwal, Sumit, John C Driscoll, Xavier Gabaix, and David Laibson. “The Age of Reason: Financial Decisions over the Life-Cycle with Implications for Regulation.” Available at SSRN 973790, 2009.