Parmenides Eidos is a unique and holistic approach to dealing with complex challenges and support any decision-making process. This framework is based on more than 20 years of research in the cognitive sciences. It provides all necessary tools to: - make sense of mass data - visualize and analyze multidimensional interdependencies - design meaningful option and scenario spaces - support joint decision making despite controversial positions - foster collaboration - overcome cognitive biases and limits in thinking - be more creative - solve problems faster and more sustainable - develop alternative strategies - increase your cognitive skills up to a factor of 10.