Later on when you got 30 or 50 year-olds in a spelling bee, it becomes a bit of a stupid human trick. Knowing how to spell the word is so much less important than knowing the meaning of it or writing a poem that uses it magnificently. But at that age, knowing that words exist ...
The first challenge in population ironically has to do with the progress in medicine and public hygiene. The improvements in sanitation, food security, clean water and medicines have enhanced life spans (Lomborg2001, pp 45–59). Globally, the average age will have increased from 27 years in 19...