One thing I love about Boston is the constant churn of new ideas and new work.This year’s Boston Young Contemporaries Exhibition is a case in point. From painting to print-making, photography, sculpture, and video, it featured the work of university and college graduates from across the region.Among those whose work was chosen for display by the art jurors is my friend Tim Geers. A talented and gregarious cameraman and former comrade in television, Tim long ago mastered what have become the low arts of local TV news and has now certifiably mastered the fine arts of video with a recent degree from the Art Institute of Boston.