Wild animals forage with the goal of getting as many calories as possible for as little effort as possible to survive and reproduce.Organizations and cultures create complex systems to amplify opportunities and search for energy.Energy investment in various forms, including profit, drives societies and economies.Complexity arises as societies try to maximize returns on energy investments.Efficiency in energy investments varies, with examples like beans being more efficient than beef.As organizations become too complex, they lose efficiency and struggle to coordinate effectively.The energy yield curves in society are influenced by advancements such as the computer chip and AI.Society faces challenges of complexity and diminishing energy returns, particularly in food, learning, and power sectors.EROI (energy return on investment) is crucial for determining the viability of energy sources.The potential of AI and renewable energy sources offers hope for increased efficiency and value extraction.