In the early books, Moirane seems to say and do stuff that doesn't make sense in light of what we find out later. Some things, like saying men and women were equally strong in the Age of Legends, is obviously due to ignorance, but how about things like saying that being able to touch the True Source gives her a certain protection against the Dark One, and that this protection extends a little bit around her. We've heard no evidence of this later on. As Magic goes, channeling seems relatively scientific. For example, being able to channel doesn't in itself shield your dreams, you have to actually set the shield.

Also, in The Dragon Reborn, in Illian, how does Moirane figure out that Lord Brend is Sammael? Also, she implies that Lan killed one of the Darkhounds, and that Sammael will conclude that a warder is in town. Why would Sammael do that? While generally badass, warders don't have magical powers, and any other equally badass person would be able to do whatever Lan did. And how was Lan able to kill the Darkhound anyway? Rand couldn't with his flaming sword.