The moving or development follows a road that is not designated. It is a road that gives one signs but not directions. Heuristic structures carry no content. The criteria of heuristic structures are satisfied when the form they anticipate is filled. Understanding fills that form.
Heuristic structure is detached from the actual content of that understanding.
It has no substance, it is merely an orientation toward an unknown. It allows you to name the unknown. Write your additions to the term heuristic structure below. Insight , Chapter 2 and 4. An Essay in Lonergan's Philosophy .