that will aid its members in achieving the best life for all. In that process changes occur as better understanding and discernment by people come to light. Case in point...it used to be that "Usury" was considered a grave sin by the magisterium...now the Vatican routinely lends and borrows at whatever the market rate is.
More recently, our Pope has instituted a global Catholic Synod in order to hear from everyone in the Catholic faith, with the objective of discerning wisdom from those comments and adjusting the teachings of the Church to better serve the people...not to simply restate old dictums...therefore, when large majorities of Catholics voice their opinions on issues like abortion, that will have an effect, given facts such as the debate on personhood for a fetus and the denial of a woman's right to live her life freely... in accordance with Church guidance...because of a forced and totally unwanted pregnancy.
Think about this.