Brain echo is used in forecasting involuntary. Perhaps, in some echo units brains are assessing the likelihood of future events. And of course, it is easy to understand that the echo mechanism provides a physiological basis for imitation and learning. Popugaystvo aping yes - that's how to begin introduction to the civilization (and this is often, alas, ends). At the time, one of the founders of sociology, the Frenchman Tarde built on the phenomenon of imitation beautiful theory of human development. Waves or imitation-rays, as they are called Tarde, going from time immemorial, providing the spread of civilization and culture, social memory, continuity and cultural heredity. Creativity is or invention that creates something new, there is a deviation from the imitation. Heresy, a mutation ... and always a risk.