Classifications

Thought of a way to classify dance companies into classical, modern, post-modern:

Classical - named after a place -> Ballet Russes, American Ballet Theater
modern - named after a person -> Martha Graham Dance Company, Paul Taylor Dance Company
post modern - named after anything else -> Lower Left, Body Cartography

Is this true for every case? No, but I think there is some truth to it. Takes us back to the question of what defines classical, modern or po mo. Is it the tool, the aesthetic or the logic? See picture below for relationship. Much work done now is still modern in terms of logic but the tools are different than the tools of traditional modern. Maybe that is what contempory work is - modern/classical logic with post modern tools.