One of the most basic, “meta” points that I know for sure sunk into my kids’ minds from their encounter with Asmodeus (and others that have occurred subsequently), is the fact that the best lies, the most devious propaganda, the most slippery, manipulative messages, are built out of the truth.  The more truth that’s in the lie, the better it is.  The absolute best un-truths will be built entirely out of truths, put together in such a way that, holistically, as “the whole is greater than the sum of its parts”, they take on a different kind of meaning.