Chapter 30
Relational Description

Observation must exist before geometry can be defined.
Measurements arise from interactions rather than from assumed spatial structure.

This chapter explores how observability forms the basis from which geometry emerges.

Measurement occurs where systems meet.
At boundaries, information is exchanged between observer and observed.

This chapter examines how boundary interactions generate measurable quantities.

Volume appears to describe the interior of a region.
Yet direct observation occurs only at boundaries and surfaces.

This chapter examines why volumetric structure is inferred rather than directly measured.