Andreas Beisswenger develops a new perspective on strategic decisions based on the analogy between human anatomy and the structure of decision-making situations, both of which are characterized by extreme complexity. This leads to a better understanding of these situations. The essential analyzes the fundamental structure of highly complex decision-making scenarios. This is an indispensable prerequisite for successful strategic actions. The author presents a decision-making aid that avoids a reductionist approach, which is often the cause of inadequate strategic decisions. Concrete guidance on planning and implementing a strategic decision-making process in practice completes the essential.