The researchers are confident that a similar switch exists in the human brain - and say that drugs that capitalise on their discovery could be in use in ten years.
NASA is exploring another noise-reducing technology - this one for helicopters - that is going through a process of discovery similar to that for the chevron.
Similarly with earnings, young men's wages (after adjusting for inflation) have been on a downward trajectory since 1970 and fell significantly from 2000 to 2010.
The assumption would have been a sacrilege in the eyes of anyone in the Greek pantheistic tradition, or in any similar tradition in any of the ancient cultures.