The early-life process is a learning activity that builds a concept of the environment we believe to live in and the actions we can take to make our living experience more satisfying. Conscious Action Theory (CAT) replaces the mysterious bubbles connecting our sensations and the physical world. The mystery is replaced with a flow of action through measurement sensors and command actuators connecting those same sensations to our internal memory model, which explains those sensations. The chapter examines the historic development of physical reality models to show how the evolutionary path of model improvement has progressed and how it leads to the event-oriented world view. The sequence of physical reality models documents an increasing progression of involving the human psyche during the last half of the 20th century and the entire 21st century. Classic scientists initially exorcized the subjective nature of religion and attempted to develop a purely materialistic concept of reality.