Each concept here is mapped to its prerequisites — the ideas you'd need first to understand it — all the way down to four foundations: Space, Time, Energy, Pattern. Click any prerequisite to drill down, or scroll for the chain graph.
Depth is the quantification of distance in the spatial dimension, measured from a reference point to a lower position, establishing a vertical relationship between two points in space.
External reference — all senses of the word “deep” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.
Trace. Question. Emerge.