I consider playfulness as a source of power and vitality in everyday life, but now, I'm tired and exhausted; therefore my power for playfulness is out of stock. This is luckily just temporary situation, but what is the relation between playfulness and empowerment in a long run? According to common sence realism, playfulness may foster the process of empowerment, but then we usually refer to adults only. What is the meaning of playfulness among children and in the school context? Another question to ponder is: what is the tacit knowledge that children have omitted? Is it perceivable in their playing?