Greta Gerwig could have chosen a funnier song or a poppier song or certainly a song that propelled us to the dance floor. Many other directors would have. But instead she tapped the right writers and got “What Was I Made For.” I applaud Billie Eilish and her talented sibling Finneas for the melancholy approach and Greta Gerwig for not trying to steer them in a safer happier direction.