This is a wonderful analysis of scene-by-scene development.

Here's another way to look at the snowball-rolling-down-the-hill crescendo of a storyline:

Say a particular act or segment has 5 portions (1-5).

The first segment is self-contained in a way. The second segment may (and probably will) refer back to something that happened in segment 1 (flashbacking). So segment 2 is actually 1 + 2. The third segment may create a question or bit of suspense (flashforwarding) that won't be explained until segment 6. So Segment 3 = 1+2+6. And in the culmination (Segment 6) the meaning of all this seesawing finally makes sense.

Now considering that most scripts have 20-100 such segments, is it any wonder that the typical plot paradigms are gross oversimplifications of how story works?