My "attention span" has increased, in the sense that I'm willing to give more effort to harder books. I didn't shy away from hard books before, of course, but the Whole Mind System gives me an excuse to imagine that it'll be easier, ultimately, to get something of value out of a book, other than a passage or two (I can always find a passage or two of interest, in any book, and always could--probably anyone can indeed do that much). The Whole Mind System systematically encourages layering of understanding, as you say, and so the broader meaning of even a hard book can take root more easily.
