User blog comment:GeorgePowell/How do you think Mass Effect 3 will end?/@comment-24.163.53.146-20110708192450/@comment-1900300-20110716061940

It is possible that EDI was wrong, but there is nothing to indicate she was wrong. For the most part, EDI was telling us what Bioware wanted you to know. Sure Bioware could not find a way to give proof to this, but felt the words of a super intellgent computer would be enough to convince people this is what happened. Thus, her words are pretty strong canon and even if it is speculation on her part it is good speculation as she is a calculating machine