Neither argument is persuasive. Yes, Francis has taken no formal position on the issues currently in play. But all his moves point in a pro-change direction — and it simply defies belief that men appointed by the pope would have proposed departures on controversial issues without a sense that Francis would approve.

If this is so, the synod has to be interpreted as a rebuke of the implied papal position. The pope wishes to take these steps, the synod managers suggested. Given what the church has always taught, many of the synod’s participants replied, he and we cannot.

Over all, that conservative reply has the better of the argument. Not necessarily on every issue: The church’s attitude toward gay Catholics, for instance, has often been far more punitive and hostile than the pastoral approach to heterosexuals living in what the church considers sinful situations, and there are clearly ways that the church can be more understanding of the cross carried by gay Christians.

But going beyond such a welcome to a kind of celebration of the virtues of nonmarital relationships generally, as the synod document seemed to do, might open a divide between formal teaching and real-world practice that’s too wide to be sustained. And on communion for the remarried, the stakes are not debatable at all. The Catholic Church was willing to lose the kingdom of England, and by extension the entire English-speaking world, over the principle that when a first marriage is valid a second is adulterous, a position rooted in the specific words of Jesus of Nazareth. To change on that issue, no matter how it was couched, would not be development; it would be contradiction and reversal.

SUCH a reversal would put the church on the brink of a precipice. Of course it would be welcomed by some progressive Catholics and hailed by the secular press. But it would leave many of the church’s bishops and theologians in an untenable position, and it would sow confusion among the church’s orthodox adherents — encouraging doubt and defections, apocalypticism and paranoia (remember there is another pope still living!) and eventually even a real schism.

Those adherents are, yes, a minority — sometimes a small minority — among self-identified Catholics in the West. But they are the people who have done the most to keep the church vital in an age of institutional decline: who have given their energy and time and money in an era when the church is stained by scandal, who have struggled to raise families and live up to demanding teachings, who have joined the priesthood and religious life in an age when those vocations are not honored as they once were. They have kept the faith amid moral betrayals by their leaders; they do not deserve a theological betrayal.

Which is why this pope has incentives to step back from the brink — as his closing remarks to the synod, which aimed for a middle way between the church’s factions, were perhaps designed to do.