The mind uses a taxonomy—a set of categories—into which it squashes the somewhat messier occurences of life, that not only shapes what we think but what we can think.
Brain Clouds: Out of Box Experience. Terence McKenna was talking about the same thing when he said that culture is provisional:
Beneath the level of culture there is lurking this erotic, time-and-space-bound, feeling-defined, pre-linguistic mode of being, which is real being.
