Being in a position of authority over God's people does NOT mean that you can declare that "the Redskins will win this weekend" and have it be infallible. Each of the examples given above is a fallible man who made many fallible statements, but was still used by God to act in an infallible manner.
Saying that the Redskins will win is prophecy, not declaration of doctrine. Besides your bad example, let us examine the rest of your statement. Were Peter or Paul infallible when they wrote their letters? Yes.
Each of these men were fallible creatures who were used by God to act in an infallible manner. That is exactly what happens when the Pope acts infallibly. Exactly the same thing. We don't mean that everything he says is correct for his entire papcy. We don't mean he never sins. We mean that in certain extraordinary conditions, the Holy Spirit works through him to guarantee truth.
SD
Please look up my response under "preaching to the choir" SD.
That was the point of my post. Even if they point to a renegade Pope in history (there were a few) and identify statements that don't fit Catholic teachings. That does not mean that he was speaking ex cathedra on matters of faith and morals. As you know and have said.
The example being discussed here seems to be an error in interpretation of what was being refuted and why.