[saradippity]

Thanks. I think I summed it up in the language of the prevailing culture.

Only when he introduces a new "Truth" heretofore not proclaimed as official doctrine/teaching must it be specifically labeled "ex cathedra".

At all other times when he expands,clarifies,illuminates or develops those truths contained in the deposit of faith,"ex-cathedra" is assumed.

In any case,I am glad you are participating again and thanks for the input.

[ultima ratio]

Your statement suggests two caveats:

First, the Council made it very clear that while doctrines legitimately develop over time, they can never evolve into their opposite: "Hence, also that understanding of sacred dogmas must be perpetually maintained...There must never be a recession from that meaning under the pretext of a deeper understanding." (Vat. Council I, canon 3.)

Second, "ex cathedra" can never be assumed as you suggest. "Ex cathedra" applies only to the most solemn of papal pronouncements and involves an intention to bind the universal Church. Hence it requires the kind of promulgation that leaves no room for doubt or equivocation on the part of theologians. It is extremely rare.