WHY OBSERVERS OBSERVE: AN OPERATIONAL PRINCIPLE ACROSS PHYSICS, BIOLOGY, AND INFORMATION THEORY

This paper identifies a physical, non-metaphysical reason for the existence of observers. It shows that observation is not an abstract act or philosophical add-on, but an operational necessity for any non-equilibrium, self-maintaining physical system that must regulate its interaction with a variable environment. By treating observers as finite matter–energy systems, the paper demonstrates that information acquisition is required to reduce uncertainty in order to enable conditioned action, control, and persistence. Observation is therefore established as a mechanically necessary function of certain physical systems, not a special property of minds or an assumption external to physics.