Das Leben ist ein Spiel
Abstract. Title of the paper: Life is a game
Sexual reproduction causes the independent combination of genetic elements. But not only the physiology of reproduction but also behavioural physiology is familiär with independent combinations; in this case the behavioural elements while playing.
An attempt is made to analyse and discover the difference between the playing behaviour of animals versus the playing behaviour of humans during childhood.
The mathematical theory of game also is based upon selective choice.
The social aspects of play in animal and human collectives is explained as well as the possibilities of therapeutical games.