Having made a success of programming contemporary music, Columbia University’s George Steel is taking on dance for Miller Theatre. “At a time when things are looking bad around the country, and audiences are diminishing, and things are boring, it’s time for New York to step forward. There have been suggestions that New York is lagging behind, and we need to change that. You hear talk that New York institutions are a little shy. No, no, no. That’s not the way we do things around here.”