Daily Analysis: Supervenience

Weak Supervenience: A weakly supervenes on B if and only if necessarily (for any property F in A, if an object x has F, then there exists a property G in B such that x has G), and if any y has G it has F.

Strong Supervenience: A strongly supervenes on B just in case, in every nomologically possible world, for each x and each property F in A, if x has F, then there is a property G in B such that x has G, and necessarily if any y has G, it has F.

(taken from here)

The moment I grasped supervenience stands out as one of the true leaps forward in my own philosophical development. It has applications everywhere but has specific application in philosophy of mind and ethics.

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