A different way of thinking: 2,5 Pi

Based on various problems currently facing the world, an attempt is made to approach these problems through a different way of thinking. These include economics - energy supply - health care - climate - food production - world population, migration and nature conservation. With this different way of thinking from a different perspective, there is a greater chance of humanity surviving the 21st century. The book does not provide direct answers to the problems but does provide an impetus to approach the problems differently from a common interest.