“Artistic value” or “quality” in a work of art is not merely a matter of personal opinion but to a high degree a matter of common agreement among artistically sensitive and trained observers and to a high degree objectively traceable. ¶ Our value judgment is a composite of “subjective” and “objective” elements. “Subjective” I call those which are the purely personal response of an individual; “objective,” those which are agreed upon by trained observers and therefore meet with general acceptance.