Now what is the cause of ignorance? It is just a vidhaan (ordinance). You might ask me, 'But why did it arise in the first place'. That is just how it is.
It is like asking, 'Why the sky is so vast?' The sky is vast, that is how it is. Or, 'Why does the sun shine?' It shines, it is like that.
Questions also have a limit (iti). Beyond a certain point there is no answer, even if you keep on asking.