If all the connecting nodes of a given station are blocked, that station is said to be in a condition of unattainability
. If all of these connecting nodes are permanently blocked, the station is in a state of permanent unattainability
, and is unlikely to feature in the game again.
If Mornington Crescent should ever reach this state, one of the connecting nodes (whichever has the lowest token threshold, or – in the result of equal thresholds – the lowest Venbacker Number) is automatically unblocked, without condition.
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