In asoiaf, weirwood influences seem far less widespread than they are in some of GRRM's other tales (see A Song for Lya or And Seven Times Never Kill Man!). In this series, weirwood influences are far more subtle, and far more selective. Rather than inhabit/control the conscious minds of every sentient being in proximity, in Westeros a weirwood might only indirectly influence the subconscious. Direct weirwood-influence comes, in asoiaf, only after one with the gift weds the trees. And "one