And every art is concerned with bringing something into being, i.e. with contriving or calculating how to bring into being some one of those things that can either be or not be, and the cause of whose production lies in the producer, not in the thing itself which is produced. For art has not to do with that which is or comes into being of necessity, nor with the products of nature; for these have the cause of their production in themselves.

Production and action being different, art of course has to do with production, and not with action. And, in a certain sense, its domain is the same as that of chance or fortune, as Agathon says⁠—

“Art waits on fortune, fortune waits on art.”

“Art waits on fortune, fortune waits on art.”