Ontology via Contrast — the idea that, at a fundamental level,
entities exist entirely through contradistinction within the plenum universe.
A is A because of non-A
Last month's blog was entitled ‘Questioning Objectivism: how come A is A’?
In further pursuit of this question, here's a link to Objectivism Online Forum and my first post there expanding upon this core ontological issue.
I'm awaiting any response there to fathom if Objectivist metaphysics refutes such a proposition
or whether it remains an open possibility.
NB, I no longer call this proposition ‘the 4th law’ as it steps beyond the pure axiomatic validation of the three classical laws of thought.