[quote=@Etcetera]
<Snipped quote by Galaxy Raider>

It is mine, as well. However, for each sources, there are at least millions of paths. And because of the very, very different ways each source can turn out, the surface has only been scratched for all the possible combinations.
[/quote]

But even if the ratio if Paths to Sources is 1000000 to 1, there are still an inexpressibly large amount of Sources. In combination with how many times Sources have reset over however long Existence has been a thing, how many times Paths get screwed with by Tier Fours, and how much can be done over the "lifespan" of a universe, I'd say just about everything short of extra-universal events have happened.