oh, the popes are fallible allright, but Christ promised that in matters of faith and morals, they would never teach in error.....does that mean that they could not sin on their own...of course not, but in matters pertaining to official teachings, they would be protected from error.
so far it has worked just fine!!!!
Christ never said the Catholic Church or Pope would never be in error. Nor would I believe for a second that they never have been in error before.