Yilore interprets the Nine in the Fourth of Duration as 'misplaced persistence.' This hunter is no lazy man — he woke up early, carried his gear, and waited all day in the wilderness. He has perseverance, patience, and skill — but all of it is useless on an empty plain with no game.
'No game in the field' are the three cruelest words in Duration — because they negate not your effort, but its direction. Insufficient effort can be remedied with harder work, inadequate skill can be improved with practice — but a wrong direction means all effort and practice multiplied by zero is still zero.
This is Duration's profound counter-example: constancy is certainly important — but its prerequisite is correct direction. Nine in the Third's problem is 'inconstancy' (right direction, no persistence), Nine in the Fourth's problem is 'misguided constancy' (wrong direction, persistence anyway). Both fail to reach the goal, but Nine in the Fourth pays a higher price because it wastes more time and energy.
If you've been persisting in one direction for a long time with consistently zero results — perhaps the issue isn't that you haven't persisted enough, but that you need to change hunting grounds.
Having the courage to admit 'this road doesn't lead anywhere' isn't giving up — it's making room to find the road that does. The wisest hunter isn't the one who waits longest — but the one who knows where to wait.