I know what has been stated about it, how the other daedric princes envied/feared his power, but I think that was a lie perpetuated by Sheogorath so as to not have to explain that he (in fact) does not know why he became mad.
That makes no sense at all! It was Jygallag who told you this. He would have been there when they cursed him and if Jygallag and Sheogorath had always been like this, why put such nonsense in plot exposition with no hints that they are nonsense.
Once again, who says sithis shaped has to mean in the image of sithis? What if it means shaped by sithis? So, the negative aspect of creation (which is negation) made Sheogorath?
The context from Faith in the Empire does:
Sheogorath (The Mad God): The fearful obeisance of Sheogorath is widespread, and is found in most Tamrielic quarters. Contemporary sources indicate that his roots are in Aldmeri creation stories; therein, he is 'born' when Lorkhan's divine spark is removed. One crucial myth calls him the 'Sithis-shaped hole' of the world.The removal of the heart from Lorkhans chest left a hole. The sithis shaped hole because Lorkhan was the soul of Padomay|Sithis and so would be his heart and divine spark as Sithis is what defined Lorkhan.
Still this is besides the point because the myth indicates that Sheogorath was created as a direct result of the removal of Lorkhans heart, not merely a coincidence at the same time.
I don't see how you've demonstrated this at all, especially considering my discoveries hinge on what was learned in the Shivering Isles.
I've mentioned it in the 3th paragraph of post #3 and provided a complete explanation in #10. You haven't commented on either.
There was, and it's called AE, along with myriad other tiers of subcreation between AE and the entities we know of. Division by IS and IS NOT is the only way the number of ada changes, apart from which they are not born and do not die, except by zero sum.
You theorized that "each aedra known to us must be a member of a triad formed of an IS (aedra), IS NOT (daedra), and an original unity." and that these respectively would be Akatosh, Hermaus Mora and Magnus.
As such AE is completely irrelevant to this discussion as an example of this unity because you suggested that Akatosh and Hermaus Mora aswell as Lorkhan and Jyg were part of one such unity and only split at the Creation of Mundus.
So proper examples by your theory would have been Lyg or Magnus and a reiteration of why you think they are.
It means there was something that was initially involved in creation but subsequently not involved in creation. That fits my explantation perfectly - a division into what was involved in creation and what was not.
Which is nonsense. Hermaus Mora is the thing that was made out of the parts that were thrown out. While the parts might all have been involved, Hermaus more as a whole was not. It'd be like saying that a person was involved in his own conception because the parts that created him were.