No, I had not heard it before. So I associated it with the empirical scientific approach, which from your response it is not. Though your thought that it is a descriptive, not scientific approach helps. In seeing fire illuminate the Eucharist, you do not try to explain the phenomenon but describe it only and leave it as a theophany. In that way, it is a reality that can be sensed, just not explained. Similar to Moses and the burning bush.
You pretty much have it - It is not cognitively difficult to grasp by the intellect...
But can you see how it is that it also pretty much rules out Transubstantiation?
The role of the fallen rational mind is repentance...
Out rational powers are to be dedicated toward the fallen world...
Human reasoning is relegated to being an internal guard-dog...
Attacking on sight demonic approaches to the nous, the mind of a man...
If one has had genuine encounter(s) with God, he or she will recall that during such encounters, one is not ratioanally interrogating anything, but is totally involved in rapt absorption of what is transpiring... There is no thought process whatsoever...
This is the stage in discipleship where the three disciples, Iakovos Peter and John, saw the Kingdom of God come in Power on Mount Tabor... And when Peter tried to contribute his thoughts, he and the others fell flat on their faces unable to even move -
Hesychia - Stillness within and without, but discipled without, that it be received within, and recognized whenever that encounter should occur...
It is the absorption of God in rapt stillness that gives Truth to the human soul, to the person encountering the Person Who is God...
This approach is, strictly speaking, scientific, but the science is Spiritual, meaning that anyone who is willing to do so can take on the discipling of the Apostolic Church and get the same results - eg It IS repeatable, and has been being repeated in all cultures at all times throughout the history of the Body of Christ, in varying degrees by varying personalities covering pretty much the full gamut of human depravity, from its lack in the Theotokos, to its full implementation in the Demoniac(s) of the Genessarenes...
The science, you see, of repentance, is discipled by those who have gained it in the historic and Apostolic Body of Christ... That way is the inside passage, as it were... There are others who did not come this way, yet gained Christ... John the Baptist was not raised by the Judaic Church, yet he Baptized Christ in the Jordan, becoming the only Prophet fortelling Christ to actually take His Head in his hands...
Melchidesek, I suspect, was another...
St. Mary another, perhaps not as much...
Arsenios