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The seemingly obvious in art shouldn't itself be a criticism since, well, Greenbergian abstraction was itself pretty obvious confrontation with some psychoanalytically blank wall stained with all those painterly headbutts of a phallic order. "less surface, perhaps, than receptacle" the press release nails. Just like all those stiff socks for male expression.
Sure it's yet another inkblot test for endless interpretation, but at least it's got a frame to shape it. Like tea leaves, like expression's seminal drips, this at least owns the navel it gazes with.