ABSTRACT
One of the basic assumptions underlying Piaget's theory of cognitive development is that the living organism, be it animal or human, will have a better chance of survival if it manages to establish regularities in its experience. The reason, on the simplest level, is that an organism that acts as if things that happen are likely to happen again can at least try to avoid situations it does not like (because they hamper or hurt) and to make those situations recur that it does like. As philosopher David Hume stated in the 18th century, if we do not believe that the world we live in repeats itself, we cannot draw inferences of any kind.
