  With regard to the text-work distinction and the more general arguments given in support of it, various doubts have been raised. Wollheim (1993) challenges the evidentiary value of thought experiments in a context where the concept in question—in this case, the one evoked by the expression ‘work of art’—has no determinate conditions for its application, but only some broad assumptions that can easily be “transgressed” by the apparent results of a thought experiment. Tilghman had complained a decade earlier that Danto did not specify any criteria of work constitution. Tilghman (1982) added that the ontological question of constitution is in any case not crucial to questions about criticism and appreciation.