I agree... the figures were all just permutations of rise and fall. When all you have is one measure (average word happiness) I don't really see what else you c

I agree... the figures were all just permutations of rise and fall. When all you have is one measure (average word happiness) I don't really see what else you can draw. I guess the main contribution is that many stories have relatively simple rise-fall curves, and don't often change their emotional state more than 3 times.