To inhabit a culture is to see, to feel, to experience connections and correspondences that are the matrix of shared experience.
When embedded in a culture this limits the range of possible expression, it limits what it is possible to think, without the individual even being aware that the culture is filtering his world view.
Perceptive participants may be able to glimpse the forest of which the trees are a present manifestation, but only by stepping outside the culture can the curtains be drawn back and the place of the forest in the landscape, the place of the landscape on the planet, and the place of the planet in the cosmos begin to be understood.