191. This opinion holds that the pictures and whatever ceremony they accompanied were an ancient method of psychologically motivating hunters.
192. A third opinion takes psychological motivation much further into the realm of tribal ceremonies and mystery: the belief that certain animals assumed mythical significance as ancient ancestors or protectors of a given tribe or clan.
193. Two types of images substantiate this theory: the strange, indecipherable geometric shapes that appear near some animals, and the few drawings of men.
194. Wherever men appear they are crudely drawn and their bodies are elongated and rigid.
195. Advocates for this opinion point to reports from people who have experienced a trance state, a highly suggestive state of low consciousness between waking and sleeping.
196. Advocates also point to people who believe that the forces of nature are inhabited by spirits, particularly shamans* who believe that an animal’s spirit and energy is transferred to them while in a trance.
197. In 1994 there were nearly 20,000 wind turbines worldwide, most grouped in clusters called wind farms that collectively produced 3,000 megawatts of electricity.
198. Large wind farms can be built in six months to a year and then easily expanded as needed.
199. With a moderate to fairly high net energy yield, these systems emit no heat-trapping carbon dioxide or other air pollutants and need no water for cooling; manufacturing them produces little water pollution.
200. With new technological advances and mass production, projected cost declines should make wind power one of the world’s cheapest ways to produce electricity.
