"the average Botswanan today earns more than the average citizen of Finland did in 1955." http://www.davidbahnsen.com/index.php/2013/11/10/the-rational-optimis

"the average Botswanan today earns more than the average citizen of Finland did in 1955." http://www.davidbahnsen.com/index.php/2013/11/10/the-rational-optimist-reviewed/ http://www.davidbahnsen.com/index.php/2013/11/10/the-rationa... I read Scott Ridley's book. And I recommend it highly.