This section examines the structure of the physical world through concepts such as events, space-time, and causality, explaining how reality is organized. Russell analyzes points, events, causal lines, and space-time order to describe the underlying structure of the world. He compares physical space with perceptual space to show how reality appears within both experience and theory. Concepts such as periodicity and causal laws are used to interpret order and regularity in nature. Ultimately, the physical world is presented not as a fixed substance but as a system of relations and structures.
