Artificial intelligence Artificial Intelligence means thinking and acting rationally. Application Domain : Robotics Memory organization knowledge representation Inference technologies Common sense reasons Dealing with uncertainty and decision making Understanding Natural Language Pattern Recognition Speech recognition and synthesis . and many more ... Definition of Belief: Essentially a meaningful and coherent expression that can be represented - that's a belief may be true or false. Hypothesis: It may be defined as a justified belief that is not known to be true. Thus a hypothesis is a belief that is backed up with some supporting evidence, but it may still be false. Knowledge: The justified belief. Knowledge can be defined as the body of fact and principle accumulated by humankind for the state of knowing. The meaning of knowledge is closely related to the meaning of intelligence and a characteristic of intelligence is tha...