Assertion: artist's use | /r/CapableOf | close the concept
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Source sentences:
text: One expression of this impulse is Weitz’s Open Concept Argument: any concept is open if a case can be imagined which would call for some sort of decision on our part to extend the use of the concept to cover it, or to close the concept and invent a new one to deal with the new case; all open concepts are indefinable; and there are cases calling for a decision about whether to extend or close the concept of art.