the Goldilocks principle

The Goldilocks principle suggests that for many systems—whether in nature, science, or human activity—there is an optimal balance or "just right" condition. It derives from the story of Goldilocks, who preferred things that were neither too extreme nor too mild. For example, Earth’s environment maintains a temperature suitable for life because it’s not too hot or too cold. Similarly, in medicine or economics, optimal conditions exist where parameters are balanced to produce the best outcomes. The principle highlights the importance of moderation and finding the point where conditions are ideal for stability and function.