Of cause it can, just because you have a character proclaim he doesn’t know doesn’t suddenly make it so. The curve goes down when his son breaks his leg and it goes up when he doesn’t have to join the army. There is no requirement to integrate all future development into the current state of the curve.
Which one is it then? Oedipus? Cinderella? Man in the hole? That story looks like a perfect sine wave, and has no defined ending (I heard it with more or less steps). It does not fit any of those 6 predefined patterns.
Of cause it can, just because you have a character proclaim he doesn’t know doesn’t suddenly make it so. The curve goes down when his son breaks his leg and it goes up when he doesn’t have to join the army. There is no requirement to integrate all future development into the current state of the curve.