[MeneMeneTekelUpharsin]

He is only a man and the Church has seen corrupt popes over the centuries and has survived.

This is not what I've been told about popes. Either they are men and subject corruption, or they are not. You can't have it both ways.

[Steve_Seattle]

"Either they are men and subject corruption, or they are not. You can't have it both ways."

The doctrine of "papal infallibility" does not claim that popes are incapable of sin or error, but only that the Holy Spirit prevents them from doctrinal error when they are speaking "Ex Cathedra," a technical term narrowly referring to official pronouncements, usually in the form of encyclicals, formally defining church dogma.

Offhand comments or speeches made by popes are not considered to be "Ex Cathedra" pronouncements. I'm not claiming the dogma is not without problems but that's basically what it is, though I'm sure someone could explain it better and more precisely.