Turing held that computers would in time be programmed to acquire abilities rivaling human intelligence. As part of his argument Turing put forward the idea of an 'imitation game', in which a human being and a computer would be interrogated under conditions where the interrogator would not know which was which, the communication being entirely by textual messages. Turing argued that if the interrogator could not distinguish them by questioning, then it would be unreasonable not to call the computer intelligent. Turing's 'imitation game' is now usually called 'the Turing test' for intelligence.
Can a computer have knowledge? Absolutely! Can a computer have feelings and emotion? Definitly not. Can a computer act and respond as if it has feelings and emotions? Most definitly. This is what the TUring Test is trying to prove. Can a computer respond in a way that will fool the user in thinking they are chatting to a real person.