DraQ
Arcane
Like any roll.Like roll d20?where the outcome hinges on a single isolated roll
Take combat. Outcome of a combat doesn't hinge on a single roll. It involves multiple rolls interleaved with player's decisions determining what actions and therefore what rolls will happen next. With a good planning combat doesn't hinge on any single roll and because rolls and decisions alternate player can adapt to changing circumstances - sometimes it may mean fleeing.
OTOH if a single isolated roll can cut off a path or result in death by RNG, the only sensible reaction is to reload after failed roll, and if player is expected to circumvent the roll results by repeated reloads there is no reason to have this roll in the first place other than to waste player's time.
If you really need to fuck player over by a single roll, don't let player know until well after the fact, but this should only apply to recoverable failures - delayed death by RNG is even worse than a plain one.