Guest author, Professor Rüdiger von Nitzsch, is an expert in Decision Science with more than 30 years experience in the subject. After his doctorate at RWTH Aachen University and research stays in the USA, he habilitated at the University of Cologne with a thesis on finance theory. In 1996 he became Professor of General Business Administration at RWTH Aachen University. Since 2004, the professorship has been operating under the name of Decision Theory and Financial Services. He is also co-founder of aixigo AG, which provides capital market related software solutions for financial institutions throughout Europe. From 2002 to 2015 he was chairman of the board of directors of the Research Institute for Asset Management at RWTH Aachen University. He was also a member of the Supervisory Board of Generali Investment Deutschland KAG and of the Board of Directors of investify S.A.  In his current research, he is mainly concerned with financial issues and the support of decisions in various fields of application, ranging from important private, professional and career decisions to corporate and political decision-making.