Well said - more formally: https://en.m.wikipedia.org/wiki/Closed-world_assumption https://en.m.wikipedia.org/wiki/Closed-world_assumption A fun question to c

Well said - more formally: https://en.m.wikipedia.org/wiki/Closed-world_assumption https://en.m.wikipedia.org/wiki/Closed-world_assumption A fun question to cut through (or expose) intuitive/cultural heuristics: did atoms exist before they were discovered to exist?