It's tempting, when assessing great creative works, to funnel all credit to a lone genius — a writer, a singer, a director, an artist, or a name that sits atop a marquee. It's so much easier to be spared the task of teasing out greatness from an interconnected web of contributors, partners, helpers, teachers and organizers. We can accept a songwriting credit that reads "Lennon-McCartney," but our icons — our geniuses, our auteurs — more often stand alone, lest their stars seem diminished.