> Christian Berggren, a Swedish professor of industrial management, has questioned the authors' 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. Furthermore, Berggren remarks that "Factfulness includes many graphs of 'bad things in decline' and 'good things on the rise' but not a single graph of problematic phenomena that are on the rise." It "employs a biased selection of variables, avoids analysis of negative trends, and does not discuss any of the serious challenges related to continual population growth." Berggren raises concerns that the simplistic worldview this book offers could have serious consequences.