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Weak Connection
  
  By definition, a weak connection exists between two candidates where, if one is true, then the other must be false.

  In general, a weak connection exists between any two candidates that share a unit. If one is true, then because a unit can only have one value, the other must be false.

  By extension two candidates at opposite ends of a chain of any type are weakly connected if the first and last connections in the chain are both weak.

  
  
Elders of Genova
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