Architecture manipulates physical space (which can be imagined as the volume of air bounded by the walls, floor, and ceiling of a room), perceptual space (the space that can be perceived or seen), and behavioral space (the space we actually move through and use). Interwoven (fluid) spaces can be contrasted with static spaces. Directional space is distinct from nondirectional space. There is also positive space (one that is conceived as a void, then wrapped in a built shell specifically erected to define and contain it) and negative space (created by hollowing out a solid that already exists). The shaping of usable space is the primary function of architecture.
—December 2020
Lance Jones 