The late Hans Rosling's Factfullness is good for many reasons, but it also espouses Africa's coming demographic and economic explosion. I'm skeptical as well on

The late Hans Rosling's Factfullness is good for many reasons, but it also espouses Africa's coming demographic and economic explosion. I'm skeptical as well on the 2040 date, but the 2099 date has Africa becoming a major player in world affairs. Changes are already taking place at incredible rates for western minds. Let's do a quick quiz for readers to introspect about their current views on the 'dark' continent: 1) How fast is the bullet train from Nairobi to Mombasa? 2) How much hydro-electric power does Guinea sell to it's neighbors? 3) How many riders/day does the light-rail serve in Addis Ababa? 4) In terms of current-day 'Californias', how many people will live in the city of Dar Es Salaam by 2099? 5) Where is the Great Wall of Nigeria? Hint: It's not dry.