Third, commonsense reasoning involves plausible reasoning. NLP is to embody a full understanding of commonsense reasoning. Qualitative reasoning is the form of commonsense reasoning analyzed with certain success. They need to be carefully tailored to ensure that they require commonsense reasoning to solve. However, they use statistical information as a proxy for commonsense knowledge, where reasoning is absent. First, some of the domains that are involved in commonsense reasoning are only partly understood. The theory of action, events and change is another range of the commonsense reasoning. The word "gumption" denotes a combination of commonsense, shrewdness, and a sense of initiative. This principle subsequently became the watchword of commonsense Bible exegesis. Commonsense reasoners try to explain the reasons underlying their observations. Problems like intractability and commonsense knowledge seemed much more immediate and serious. Later researchers would call this the commonsense knowledge problem. Each of these spheres has a well-acknowledged theory for wide range of commonsense inferences. Research into commonsense knowledge has focused on reproducing the "background" or context of knowledge. "It's not hard to give a commonsense definition of consciousness" observes philosopher John Searle.