What is seven? Can you explain the term without referencing objects?
"Objects" = occupied space.
7 or any number of abstract concepts exist because occupied space exists.
SPACE......---> occupied convex >(< concave occupied <------....SPACE
Repeat after me "objects" = occupied space.
There, that wasnt so hard, was it.
Occupied space can never be less than than and integral set of;
6 edges/chords /\/\/\ aka event trajectories
4 vertexia events, somethings, crossings, intersections, points,
4 openings
12 surface angles
12 dihedral angles
12 radial angles