astute observation. Nor can I pretend to 'understand' the process by which (say) a once "stark, rapid emotional decision" is later undermined? nibbled at by ducks? .. leading to a sort of "Oh Well - it seemed Right at the time" resignation.
Y'know? Maybe another case of, 'all generalizations are false including this one'. I suppose you've just demonstrated that the 'suddenness' may be a most frequent component: but 'mind/heart' may indeed change over time as well, with either more experience or deeper contemplation.
Ashton