It occurs to me that I forgot to mention that Maldin shares a similar view, regarding the ability to "know" spells. He has laid out his position on his web site, Maldin's Greyhawk.
He's even gone so far as to create a chart, showing his view of matters, which you can find here. Of course, you Gamers with a preference for 3.5 need to bare in mind that Maldin is 2nd Edition. At any rate, I thought I should insert this now, before moving on to another topic.
Oh, and for those of you who like "short cuts," Maldin's unique list of magical items can be found here.