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7. Existence / C. Structure of Existence / 6. Fundamentals / a. Fundamental reality

[a possible bottom level for the structure of existence]

3 ideas
Basic is the potentially perceptible, then comes the contrary qualities, and finally the 'elements' [Anaxagoras]
Fundamental particulars can't change [Harré/Madden]
We say there is no fundamental level to ontology, and reality is just patterns [Ladyman/Ross]