However it is certainly very convenient in terms of development. CD is dependent on scripts for its 'real-world' knowledge base. The primitive actions defining the actions of the real word are chained together in scripts. A restaurant script for example may describe that a person should pay a tip before leaving, or if he is not satisfied with the service, he should not be expected to pay a tip. A script on reading books may stipulate that one must lay one's eyes on a book before actually drawing information from words.
Scripts play an essential role in enabling programs using CD to draw inferences.
He sat down. He got mad. NLP Essays - Many essays on theory and applications of GAs.