The release of the Gardner Museum surveillance video from the night before the robbery, on August 6, 2015, should go down in history as the worst crowd sourcing campaigns ever. Locals pronounce it crowd saucing.  Perhaps it should be spelled  "saucing," too, since that term more accurately reflects this peculiarly half-hearted effort at community engagement.  The silent surveillance video itself is so dense in clues and information that, set to music, in the right hands, it could practically qualify as an interpretive dance.  The video itself has become part of the culture, the world of art in its own right,  as part of a series of works by Kota Ezawa called “Gardner Museum Revisited” It all begins mundanely enough.  At the very start, the video shows a very tall, older guard staring blankly ahead, like a million other souls working overnight on a weekend, safeguarding the belonging of others...