Re: Buddhism
My limited reading on the subject lead me to believe that the split was not so much scriptural as practical – what you had to do to gain Enlightenment.
Re: Sunni / Shiite
While Arnold, to my knowledge, is correct, my understanding was that the split had less to do with doctrine than with politics: whether or not one accepts the legitimacy of all four rashidun – the four “rightly guided” caliphs who were the companions and immediate successors of the Prophet Muhammed. Sunnis (the majority of modern Muslims) accept all four. Shiites believe that the first three were more-or-less userpers, since they were not direct descendants of Muhammed.
Re: Proposition B
Without necessarily agreeing with the position, I think we can understand it better by comparing it to gravity.
Gravity has existed ever since time began. Animals didn’t understand it; early and classical civilizations didn’t understand it – it was just there. Newton comes along and writes a few equations describing it. Einstein comes along and writes a few more equations, describing it better. Quantum physicist are writing even newer equations as we speak, and getting closer and closer to a full understanding of gravity.
(Obviously, I’m skipping a lot of details here…)
The point is, gravity hasn’t changed; just our understanding of it. And if tomorrow some scientist were to come up with the final, ultimate answer, it wouldn’tmean that gravity has suddenly started existing at that moment, or has suddenly changed in some way.
The same with religion under Proposition B. The “Truth” (whatever it may be) is eternal, and is always there. (“Is now as it was in the beginning and forever shall be, yadda yadda yadda.”) Mankind’s understanding of the Truth varies. Different religions are closer or further from it. Different sects within a religion may be closer or further. But they are all striving for that Truth.
So, when proposition B speaks of a “religion,” it refers to that eternal nugget of Truth. When proposition A speaks of a religion, it speaks of the doctrines and practices apeople uses to get at that Truth.
Thus, adherents of both positions may be completely right, and still argue right past one another. 