Relatedly, the explanation may have to do with a tension between two kinds of thinking: what computer scientists call exploration and exploitation. When we face a new problem, we adults usually exploit the knowledge about the world we have acquired so far. We try to quickly find a pretty good solution that is close to the solutions we already have. On the other hand, exploration — trying something new — may lead us to a more unusual idea, a less obvious solution, a new piece of knowledge. But it may also mean that we waste time considering crazy possibilities that will never work, something both preschoolers and teenagers have been known to do.