  I remain unconvinced that Aviendha actually saw a future generated by the Columns ter'angreal. In that sense, the future she saw is easily avoided because it is highly improbable to begin with.  So what was the future she saw generated by, as she walked thru the columns a second time?  Nice try. We were specifically discussing failure modes, and why mysteriously every Object of the Power that wasn't shattered or otherwise compromised physically still worked. 