"Renard was the one who truly masterminded it but married couples often pooled their magic together." So two were one for the intent of magic or something similar. "I wouldn't say that there was a lack of understanding. A schema allows you to gather and store information within it for your spell work. So Renard put years upon years of research about it within it that would enable him to do what he wanted. He may have very well succeeded but the possible consequences of it never existing? That could change the world in ways we can't even imagine."
Yet here they were and AIDs still existed.
demon_pachabel