Families are the place where one learns or does not learn the Christian faith, to say nothing of simple moral habits and virtues.

And we have not even gotten to the theological and canonical issues surrounding families: marriage as a sacrament, annulments, liturgical ceremonies, the family in the church, etc.

It is simply too much to deal with in a three-week meeting.

Second, the membership of the synod makes dealing with the topic of the family difficult.

The 270 synodal fathers come from many different cultures and as a result have very different priorities and concerns, not to mention different cultural conceptions about family life.

Bishops in the Middle East and Africa see their families facing the constant threat of violence and death that forces them to become refugees fleeing their homes. How can you have a family under these circumstances?

Many bishops in the developed world are concerned about how to respond to high divorce rates. But outside the wealthy, industrialized nations, the issues may be human trafficking, arranged marriages, interreligious marriages, child brides, polygamy, female genital mutilation, and cultural customs where marriage is seen as taking place over time, not in the instant when the couple says their vows.

Can so many people from such varied backgrounds have any common understanding of the problems facing families and how to deal with them?

The third problem facing the synod is the synodal process itself.

Synods are paper factories. They produce lots of speeches, recommendations and sometimes even a final document, but do they make a difference? In 1980, I covered an earlier synod on the family that faced almost every issue that this synod faces. Did it make any difference? If it did, I don’t see it.

The 1980 synod made many of the same recommendations that this synod will make: better marriage preparation, better formation of clergy so they can help families, better education programs, greater support from governments for families, less violence, more love.

New programs and ideas are not generated at synods. Bishops can only share what they bring. New programs are created by entrepreneurs who have an idea, experiment with it, and improve it through trial and error.

The fourth reason the synod is doomed to failure is that it is seriously divided on the question of what can and cannot change.

This clash is most obvious over the question of readmitting divorced and remarried Catholics to Communion.

One side sees only the law — the marriage contract is permanent and can be terminated only by death. The other side sees millions of people suffering from broken marriages that cannot be put back together.

One solution to this crisis is the annulment process, whereby the church declares that, even though there is a signed contract, the contract is not valid because of some failure at the time the wedding took place. There was much support at the 2014 synod for making the annulment process easier and faster, and Francis acted on this between synods.

The attitude of the bishops toward annulments is the greatest change since the 1980 synod on the family, when the American bishops were fiercely attacked by curial cardinals for making annulments too easy.

Francis has gone way beyond the American procedures by allowing bishops to declare a marriage annulled through an administrative process rather than a judicial process. Even canon lawyers are scratching their heads wondering how this will work.

But the fundamental problem faced by the synod is the same one faced by the Second Vatican Council: What can and cannot change in the church?

The pope and the bishops are constantly saying that the synod will not change church doctrine, but only pastoral practice. Bishops appear to even be afraid to talk about the development of doctrine, lest they be seen as wishy-washy on doctrine.

The conservatives see the readmission of divorced and remarried Catholics to Communion as violating a doctrine of the church — the indissolubility of marriage. To them, it would be an admission that the church was somehow wrong in its teaching in the past.

Any student of the Second Vatican Council recognizes that this was the same complaint of Cardinal Alfredo Ottaviani and his conservative colleagues who fought changes in church teaching on ecumenism, religious liberty and other matters.

So for the bishops to allow divorced and remarried Catholics — who don’t have an annulment but are civilly married — to receive Communion, they must somehow explain it as only a change in pastoral practice and not a change in doctrine.

The fifth reason the synod is doomed is the absence of theologians at the synod.

One conservative curial cardinal complained of the “schoolboy theology” being presented in episcopal speeches. There is some truth in that complaint. There is little evidence in their talks that bishops consulted theologians in order to understand contemporary thinking in Scripture, ethics or doctrine.

The bishops would have been better off spending the first week listening to theologians do an exegesis of scriptural passages on marriage, explain the concept of the development of doctrine, recount the history of the church’s treatment of marriage, and propose resolutions to controversial questions.

The reason that Vatican II was successful was because an alliance was forged between the theological periti and the council fathers that was capable of defeating the Roman Curia’s intransigence. Tragically, this alliance was broken after Humanae Vitae, when theologians were cast into the outer darkness as dissidents whom the bishops were to avoid at all costs.

The result has been disastrous for the church. It is as if the management of a major corporation is not on speaking terms with its research and development division. Would you invest in such a company?

Is there hope for the synod? Yes. Francis has begun a process; he has opened the windows closed after Vatican II. It will take more than three weeks to move the church forward, but he is moving it in the right direction.

Perhaps the synod is not doomed to fail but simply to be unfinished.

[Jesuit Fr. Thomas Reese is a senior analyst for NCR and author of Inside the Vatican: The Politics and Organization of the Catholic Church. His email address is treesesj@ncronline.org. Follow him on Twitter: @ThomasReeseSJ.]