I'm surprised that Papal infallibility in matters of faith and morals has not been raised (unless I missed it in my scan of the posts).
I know, this is Wikipedia...
"Papal infallibility is a
dogma of the
Catholic Church that states that, in virtue of the promise of Jesus to Peter, the
Pope is preserved from the possibility of error
[1] "When, in the exercise of his office as shepherd and teacher of all Christians, in virtue of his supreme apostolic authority, he defines a doctrine concerning faith or morals to be held by the whole
Church."
[2]
This doctrine was defined dogmatically in the
First Vatican Council of 1869–1870, but had been defended before that, existing already in medieval theology and being the majority opinion at the time of the
Counter-Reformation.
[3]"
There are restrictions regarding Sacred tradition and Sacred Scripture, but the ecclesiasticalese is more dense and impenetrable than legalese. Every time I think that there is a blocking restriction, I find a detour around it...I love my church!