In the 1960s , the world was divided into ` ` ' -- or Western '' and ` ` developing '' Hans ##son says the divide was relevant in terms of wealth , education and life expectancy . But he says since then , there has been a shift -- with most countries in the middle . Age of 'Peak Child ' The old mindset has not caught up with the new reality and is changing , Rosling says .
In the 1960s , the world was divided into ` ` ' -- or Western '' and ` ` developing '' Hans ##son says the divide was relevant in terms of wealth , education and life expectancy . But he says since then , there has been a shift -- with most countries in the middle . The old mindset has not caught up with the new reality and is changing , Rosling says .