First edition, German The author, Alfred Obermayer, compares the human body to a liquid in terms of its physical properties, expecting it to behave accordingly ... and it does! In a series of simple experiments, he demonstrates the principles of sack theory and discusses its consequences to our understanding of human physiology.

Second revised Edition The author, Alfred Obermayer, compares the human body to a liquid in terms of its physical properties, expecting it to behave accordingly ... and it does! In a series of simple experiments, he demonstrates the principles of sack theory and discusses its consequences to our understanding of human physiology. This new, completely revised and translated edition was made with the help of Christopher Lattimer, MD, an experienced physician and surgeon. It corrects mistakes of the first edition as well as introducing some completely new aspects.