o think that Aviendha could affect ter'angreal before, so why do we think she did now? Maybe this ter'angreal was tuned to her blood and changed when she touched it, as opposed to changing because of something she did unconsciously? It's HER line (well, hers and Rand's and Min's) that screws things up for ALL the Aiel...maybe she's the only one this would have worked for? Maybe they're just dead to her now, although I'll say that her thought process about the uselessness of them is actually a good one. What's the point of them anymore, even if they do work the old way for someone else - or the new way?  The notion that any Aiel could have re-entered it. Recall the prohibition (I fought for this idea back when the books came out) that they were not to enter the columns a second time, iirc. It's possible that the Wise Ones know of this or passed down a prohibition, or even that other Wise Ones had entered a second time, or that this is part of the Wise Ones training later on to return to Rhuidean again.  If other Wise Ones had seen their own blood/mw future, it would make sense as to why they are very concerned about the Remnant of a Remnant. And wait...hmm...ok, while I use Dreamwalking as the reasoning for their interest in Aviendha...if other Wise Ones had seen the future...then Aviendha would be IMPORTANT indeed. Ok, I'm adding this to my theory. :) 