To be clear, are you saying that a literal interpretation of the fall is needed to discuss this?
Thank you for your reasonable question.
What I said in post 674 is that the Catholic Church has not abandoned the philosophical (deductive) approach to truths about God and human nature. (
CCC, 66)
As far as I know, there is nothing in the philosophical method used to discover truths that requires a literal interpretation of the Fall.
It is understandable that people are so entrenched in the debates of literal vs. figurative, science vs. faith, that the foundation for this thread (post 1) has been overlooked. This foundation for this thread consists of Catholic doctrines which flow from the first three chapters of Genesis. As far as I know, there is nothing in the philosophical method that requires that every verse in those first three chapters automatically becomes a Catholic doctrine.
The jewel of this thread is that it gives us the freedom to move away from the debates of figurative vs. literal, faith vs. science.
This may be a downside for some people. It is Catholic teachings that become the authority when there are questions about literal vs. figurative; science vs. faith.
Because an organization has the right to determine its policies, I respect the ban on evolution discussion. I will not debate the ban.
I follow the principle of rendering to Caesar the material things that are his and rendering to God the spiritual things that are His. We belong to the spiritual world of God. And the spiritual world of God is explained by the Catholic Church based on the many research papers found in Holy Scripture and Tradition. There are so many ways of ending up in the doctrines of Catholicism.
Going back to this statement above.
“As far as I know, there is nothing in the philosophical method used to discover truths that requires a literal interpretation of the Fall.”
When we are free from the literal only or the figurative only format, we might ask ourselves about the truth being presented. What is the truth that the writer of Genesis was describing? Is it a literal truth or is it a speculation used as a figurative description of a truth? When we are using the deductive method, we might examine the two axioms to see how they would support a literal truth described figuratively. This is not easy which is why a thread is being used.
Going back to the second statement above.
“As far as I know, there is nothing in the philosophical method that requires that every verse in those first three chapters automatically becomes a Catholic doctrine.”
This should be obvious, but it is not. We keep hearing the question "Is Genesis literal? There are 50 chapters in the book of Genesis with more verses than I am willing to count. Can that question about literal be a tad more specific? Is the talking snake literal? Could it be that the author of chapter three had never seen Satan in person?
Are you beginning to understand why I do not have a simple yes or no to the question, “To be clear, are you saying that a literal interpretation of the fall is needed to discuss this?”
When we remove the authority of science from the first three chapters of Genesis, we are still free to check out those chapters based on Catholic doctrines. I am definitely prejudiced toward the Catholic Church.

But in our free world, we need a firm position in order to analyze all those verses.
As I said in post 674,
“Of course, everyone is free to dismiss Catholic teachings. But – that does not change the reasoning process based on the fact that God exists.”
What is needed to discuss issues of this thread, is a process or method that allows us to start with some basic truths apart from the material world of science.
In no way, does this mean that science is useless. It simply means that the spiritual world of God is first when we are examining the human being pre-Fall and post-Fall.
This thread is asking readers to look at human nature itself based on the Catholic approach to human nature. Because of the process or method, we can freely examine individual points in the first three chapters of Genesis from the literal position
and from the figurative position. Eventually, we can add to the axiom “God as Creator interacts with humans.” With the Socratic Method, we can pose the question, Does God act personally with each human? That should really stimulate critical thinking.

We need to get ourselves into the discussion.
I am worried that I have not come close to answering your very important question. At the least, can we use this post as a start?