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.
Murmurs are soft, indistinct sounds that occur at the threshold of perception, where the patterns of sound waves interact with the sensory capabilities of an organism.
External reference — all senses of the word “Murmur” on Wiktionary. This atlas concept maps to only the slice of meaning relevant to the prerequisite graph.