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'''''Non possum vivi'''''<ref>speedystoneball's term; short form: ''vivi''</ref> (Latin for "(I) can't live"), also known as a '''wrong ball''' or '''stalemate'''<ref>Dilant's term</ref> is a softlock where the player is unable to make progress due to having the wrong ball material with no way to [[transformer|change the ball]]. ''Non possum vivi'' can only be resolved by restarting the level; a [[suicider]] cannot solve the problem, since dying does not change the ball. ''Non possum vivi'' is usually a serious flaw in the design of [[mapping]] (worse than ''Non possum mori'' ), but can generally be easily avoided by the map maker's careful inspection of the map logic.