Actually, we can enter Changed, Stop, Do-er, Linear, Spacelock, Failure, Good, Physics, Obtaining, Attitude, Hinder in 11 of the 12 Questions and get everything but the Signposts filled out. So, our major Storyform choices don't actually force anything.
That is an excellent question. I wish I knew.
Honestly, I like the Signpost order a bit better for Decision than for Action, but only so much. Originally, I was having a hard time pinpointing the decisions or deliberations that could mark turning points. But, now I have some.
- The decision that the race ended in a tie. (But, Lightning refused a tire change.)
- The decision to keep Lightning in Radiator Springs. (But, Lightning tore up the town.)
- Lightning's decision not to run off. (Though, could be Lightning's discovery of Doc.)
- Doc's choice to call. Lightning "choosing" to go back. (But, really Mac kind of forced him.)
- Lightning's decision to help the King. (But, Chick caused the wreck in the first place.)
The problem is that I can also pinpoint actions near the same locations as these...
Plus, most of these feel more like they were forced by a previous Action, as indicated.
*Throws things on the floor in frustration*
This is the biggest part of the theory that I just can't wrap my head around. Driver is more difficult for me than the RS seems to be for most everyone else. (Interestingly, I actually understand the RS fairly well, I think, due to knowing some non-English words for various relationships.)