We overturned nearly two millennia of set tradition when we began ordaining women 34 years ago. We repudiated the traditional tolerance of slavery and racial prejudice in the mid-20th century. We traded our cultural privilege and hegemony as a largely Anglo denomination for the wealthy and have deliberately become more and more consciously a church for all. In all these things we have prayed and thought and been in earnest conversation in and out of the church, and believed that in the end we have discerned better the mind of Christ than we had in the past.
It can definitely be unsettling to find that some structures and beliefs are not fixed and unchanging. Add to that the fact that the Episcopal Church has no doctrine of infallibility, of anybody, and one can understand those who prefer more predictability. For me, I hope to stay open to divine surprise.