Factfulness: Ten Reasons We're Wrong About the World – and Why Things Are Better Than You Think

Rosling criticizes the notion of dividing the world into the "developed world" and the "developing world", saying it's an outdated view. He shows that today most countries are "developed" and the ones that aren't don't fit how developing countries were when the term became popular. Instead, he offers a four category model based on income per person (adjusted for price differences):

1. less than $2 a day
2. $2–$8 a day
3. $8–$32 a day
4. $32+ a day

One frequent and recurring theme of Factfulness is the notion that the world is getting better. It also stresses that many people think the world is getting worse when, in fact, it is not. The survey at the beginning states that with over 10,000 poll recipients 80% knew less about the world than chimps would have [had] they just guessed. This, the authors claim, shows that the media systematically skew data, trends, and use selective stories to make people think that the world is getting worse. However, Christian Berggren, a Swedish professor of industrial management, has questioned these claims, and suggested that Rosling's own thinking shows a bias towards Pollyannaism. Particularly, Berggren criticized the authors for understating the importance of the European migrant crisis, the environmental impacts of the Anthropocene, and continued global population growth.[6]