This is an example of supervenience: "a wall supervenes on its bricks" It seems to me that the words "supervenes on" can be replaced with "consists of". A wall consists of its bricks. This makes clear that "supervenience" is about giving a label(wall) to a group of objects(bricks). So supervenience is actually nothing more than the act of label-giving, and this is a mental activity that takes place inside minds. One sees a collection of bricks and gives it a label, "wall". Thats supervenience. Am i wrong? Anyone know an example of non-mental supervenience? --- Btw the reason im asking is because im wondering what use the common phrase "mind supervenes on brain" has. If it just means "mind is a label given to brain", and it doesnt describe any kind of physical relation or causation, then its no different from a phrases like "the mind dreams about clouds" or "i see colors". All of those phrases describe mental activities and none of them has anything to do with, let alone supports, physicalism.