Z-paper 876 by Herb Zinser provides some data about Nature's SYMBOL MACHINE comprised of nouns, verbs, concepts, math equations, flowcharts, etc. The ideas found in math and science textbooks are part of the SYMBOL MACHINE.
Using Galileo's suggestions of " 2 CHIEF WORLD SYSTEMS" we now perceive Sartre existentialism as partitioned into 2 or more data spaces....... the 2 CHIEF existential entities
1) physical reality of objects: concrete highways, iron automobiles, cellulose trees, humanoids, etc. 2) The world of symbols, concepts, process control system flowcharts, biochemistry diagrams, math and physics equations, etc.
Maps and Territories - Rijnlandmodel Language in Thought and Action, S.I. Hayakawa. Chapter 2 Symbols Maps and Territories There is a sense in which we all live in two worlds.