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.
Tips emerge as a form of gratitude expressed through extra payments given to service providers, building upon the concepts of money and gratitude to facilitate a social custom.
External reference — all senses of the word “Tip Money” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.