15 years ago, the church apologised for the trial of Galileo. This in itself should have given the hint that Papal infallibility isn't what it was.
The current Pope has just gone back on that, saying the trial was 'reasonable and just'.
It's a Papal showdown!
Both Popes can't be right (you can't apologise if you've done nothing wrong, and you can't have done something wrong if your action was reasonable and just)... yet, both are infallible.
Does not compute.... warning... error.... *BAA-boooom!*