One of the interviewee says the painters had two ideas that shaped their consciousness is ways we can barely fathom. One is “fluidity,” that the categories we have—man, woman, horse, tree—can shift. Under the right circumstances, a tree may speak. A man can get transformed into an animal. And vice versa. The other, “permeability,” means that there are no barriers between our world and the world of the spirit. The wall of a cave, for example, may speak to us. It may accept or reject us. A shaman may project himself into the spirit world and return, or receive visits from the spirit world. This is why, for example, the Gwich’in didn’t think it strange for a hunter to dream of caribou in a certain place, go there the next day, and find them. It blew my mind, but to them it was everyday reality.