First let me thank all of you for all you do. My question was regarding Ordinatio Sacerdotalis. I have read the replies in which Jim Blackburn quotes the Responsum ad Dubium from the Sacred Congregation for the Doctrine of the Faith. However, when I was telling a friend about Ordinatio Sacerdotalis being infallible, he said he disagreed because if the Pope had wanted it to be infallible, he would have clearly stated in Ordinatio Sacerdotalis that this was an infallible teaching. When I quoted the Responsum ad Dubium, he said, “Just because the Sacred Congregation for the Doctrine of the Faith says it is infallible doesn’t make it infallible, because they are not infallible.” Also, he said that he has heard many different Bishops state that one day this teaching could change and women priest could be allowed. Could you please help me better understand this? Thanks in advance.