Board Thread:Questions and Answers/@comment-25148221-20140707021425/@comment-1268838-20140710230417

Aizen is deception incarnate, but the real deception was both Ichigo and the reader's assumption that everything that had happened was, indeed, mere coincidence. The real point of that entire situation was to make Ichigo question himself, particularly why he was so special as to attract Aizen's interest in the first place. The denouement of that reveal was, of course, Isshin's arrival (which was more of a twist for Ichigo than it was for us). Regarding any of that as a falsehood, however partial, only really serves to undermine the entire situation.

As Aizen more or less said himself, the things he was telling Ichigo were not truths (things that vary by perception, which can be deceived), but facts (which are absolute). Through some philosophical sense, evidently the two things are not the same.