Great point because we've all been there where we've quoted something some priest or bishop or even pope says and get the old *It's not INFALLIBLE* doctrine.
So clear up matters, it would be good to have a list of what is considered infallible doctrines which Catholics have to believe to be faithful Catholics, and what are just statements or opinion made by church officials which can be taken or left as the hearer so desires.
When the claim runs to "as instituted by Christ" then there should be some chain of custody as to the doctrine or dogma, one would think.
Just saying "WE ARE the "chain" for reason that "we" have had or claim to have had custody, doesn't quite cut it.
Particularly when it is evident enough that a few things were NOT present within the NT church, or common to the primitive and earliest (Christian) church among the various far-flung assemblies which made up that which came to be known as The Church.
It surely wasn't as Rome being the lone ranger, riding herd over all the sheeple bishops and peoples elsewhere.
Even some of Marionism has it's roots not in the teachings of those considered to be in authority, but the Protoevangelium of James, and coming also from the imaginations of those from the lower rungs of the church, who themselves may or may not have much known Christ through the Holy Ghost.
But bit by bit, such ideas as were not found at the source have entered in and puffed themselves up, puff-by-puff over the years.
Acorns my foot. Those doctrines are a pain to "the body".
This is the second time I am posting this to you. try paying attention this time. Fundamentals of Catholic Dogma by Fr. Ludwig Ott http://www.amazon.com/Fundamentals-Catholic-Dogma-Dr-Ludwig/dp/0895550091/ref=sr_1_3?ie=UTF8&qid=1398775362&sr=8-3&keywords=Fundamentals+of+Catholic+Doctrine:
Recognized as the greatest summary of Catholic dogma ever put between two covers. A one-volume encyclopedia of Catholic doctrines. Tells exactly what the Church teaches on any particular topic. Tells when the pronouncement was made and gives the sources from Scripture, Church Councils, Papal statements and the Fathers and Doctors of the Church. Essential for priests, seminarians, parents and teachers. Easily one of our most important books. 560 pgs, PB