Read Jaswant Singh and Dr. Lawrence Ziring, and listen to Advani! and other Millions of books that you people in India don't read!
What Jaswant Singh and Advani harp(not so anymore) about is only that Jinnah wanted united India. They do not mention the price India would have paid for such a unity. As I mentioned, Ayesha Jalal gives details of who wanted what or rather who negotiated what. It gives an extremely wobbly union, with a parity between Muslims and Hindus in India. Why should there be parity if you consider everyone equal(something which Jinnah awkwardly said he believed, as per his Constituent Assembly speech)?
Those men have vested interests against Nehru, and if you go by theories like Nehru should have first accepted unity and later strengthened the Centre, see Jinnah's demands. Jinnah wanted an option of secession. It would be plain stupidity to accept such a plan. Even if you want to argue that Jinnah meant it as a negotiating tactic, well such an honest man makes such a threat, you have to be careful and reduce your risk. That's what Congress did. It was simply impossible to make any change to the details of Cabinet Mission Plan later. Because the respective Constituent Assemblies could not make any decisions regarding the Centre except by mutual agreement. If any such changes was attempted forcibly, it would have led to a civil war. Jinnah talked routinely about civil war happening because of this or that basically blackmailing the British saying if you do not make solid guarantees for parity, all order in British India will fail. Nobody would want to put up with such blackmail.
It was a wonder that Congress, despite being a more representative body sat at the table even as Jinnah insisted that his party alone represented the Muslims of India. He had a problem with the Congress putting up their own Muslim members in government and in the negotiations. Nobody can cure such a condition. I would dare say, because of such dovishness, with too much eagerness for freedom, Congress entertained Jinnah's unreasonableness too long which led to his over confidence ultimately leading to a bad outcome. For too long, Jinnah was conditioned into thinking if we asked for 70 he would get 50. This was possible because of Congress's over-enthusiasm to get British out.
So I do blame Congress for the partition of India, but not because they did not come to agreement with Jinnah, like Jaswant Singh and Advani say. But because they capitulated to his unreasonable demands which led to him asking even more crazy pies. I haven't read Ziring. I will sometime soon. Thanks for the info.
The parity in question is what Pakistan is still after today. They want to be treated as a equal to India when they are not. They want the world to somehow come out and balance the power between India and Pakistan as if the world owes them and they are entitled.