Children possess programs to fully use the capabilities of the mind and body. CRN's starting point is the concept that playfulness starts these programs in operation. When children are absorbed in play, filled with excitement and a joie de vivre, the programs of the mind and body work at full capacity. We also define the "playful spirit" as a certain feeling or emotion, the thoughts, curiosity and inquiring mind that arise when an individual is absorbed in something. The definition of "playful spirit" also includes sympathy for others, positive attitudes, and a concern for people and things. In other words, a playful spirit encourages children's spontaneous learning.