Locating, locating, locating.

The article focuses on various theories that help to determine the method behind searching and movement patterns of man from the earliest times. Searching has always been crucial to human survival. Hunter-gatherers had to be good at searching to find food and water. Traditionally, scientists have assumed that ancient people moved from place to place in a random way. They based their models on a description of random movement borrowed from physics, called Brownian motion.