Have we reached the part that Paulus was talking about where you accuse me of being a troll?
Not quite, but we're getting there.
Now, to reassure us that you're not a troll, why don't you tell us which areas of the megalithic subject you're interested in, or have some degree of knowledge about; it's quite a simple question really and will clarify whether you're in the right place or would be happier in one of the internet semantic forums ;-)