Ok, so 2 balls could cover more than 2 possible outcomes assuming that there are multiple outcomes (i.e. penalty vs no penalty) from the same position.
Am I correct about the 3 possible scenarios that I laid out in my post #30? I am pretty sure I have the first two right, but am not certain about the 3rd (which your post #29 seemed to introduce).
I want to make sure that I understand this going forward. Am I correct that there are 3 possibilities when a ball moves after being replaced on the green but before the player has addressed it-
1. The player caused a ball at rest to move- 1 stroke penalty and replace the ball to the original location.
2. The player did NOT cause a ball at rest to move- No penalty, play the ball from the new location.
3. The replaced ball was never actually at rest- would this be no penalty and replace the ball to the original location?