“When lost in the desert or a thick forest — terrains devoid of landmarks — people tend to walk in circles. Blindfolded people show the same tendency; lacking external reference points, they curve around in loops as tight as 66 feet (20 meters) in diameter, all the while believing they are walking in straight lines.
The researchers believe that loopy paths follow from a walker’s changing sense of “straight ahead.” With every step, a small deviation is likely added to a person’s cognitive sense of what’s straight, and these deviations accumulate to send that individual veering around in ever tighter circles as time goes on.
As of yet, no one is sure where in our inner workings the accumulating deviations arise.”
the Whole Garden Will Bow 