.  Along this route of thinking, I doubt she broke it. I think she unconsciously reprogrammed it, something it was built to be able to do.  If that is the case, then whatever it was reprogrammed to do involves what can be learned from "Blood and Bone." The "hardware" of the ter'angreal analyzes Blood (and Bone) to extract ancestral experiences. Whatever it might be reprogrammed to extract, it has to use the same "hardware" to do so.  Why would they build a tool that was simply a backward looking machine?  Because they already had a "forward looking machine" handy? (The Wise One Apprentice Testing Rings--A device which clearly uses either T'A'R or Mirror Worlds to show "ALL possible futures.")  But, considering what Aviendha saw, we have every reason to believe it was much more capable of doing things that it hadn't been used to do.  Why does everyone take Aviendha's POV for fact?  Considering that her encounter with Nakomi reads like the POV of an action hero fighting a drug-enhanced interrogation, why won't anyone consider that it might have been Aviendha that was "reprogrammed" rather than the columns?  This does bring up a good question - was it only programmed to accept certain bloodlines, and can that be changed too?  