Have you ever heard the old saying that people who get lost tend to walk in circles?
Jan L. Souman, a German psychologist, wanted to determine scientifically if this was true. He took participants of an experiment to a large forest area and to the Sahara desert and used a global positioning system to track where they went. They had no compass or any other device. Instructions to them were simple: walk in a straight line in the direction indicated.
Supplemental ideas: Watch this video of excerpts of Elder Jeffrey R. Holland's talk, "God's Words Never Cease." His talk discusses the landmarks of scriptures that can keep us from wandering in spiritual circles.