The author Klaus-Dieter Sedlacek, born in 1948, studied mathematics and computer science. He completed his studies in 1975 with a diploma in mathematics. After a few years of professional experience, he founded his own company, which dealt with the development of application software. This he led for more than twenty-five years. As a mathematician, he is predestined to uncover and logically explain complex interrelationships in our world. Besides non-fiction books he also writes exciting novels.