As he was interested in epistemology, he dealt with human problems and social life, unlike the other philosophers who tended to be too political with people. He asked whatever came to his mind during the dialogue. He liked to discuss any issue with people, regardless of social standing. Parmenides was the farther of logic. Socrates learned from him.
Logic is directed at the meaning of language as the fact based on what is valid or invalid.
Using logic can give us information about something we don't have experienced with or make us able to imagine a particular situation, eg. For ten years a fisherman is at sea and in that time adapts to the tides, the weather, or seasons of marine life. By applying his dialectical method, i.e. questions and discussion, Socrates would be capable of learning a great deal of the fisherman's knowledge in a very short time. The dialectical method of Socrates does not only apply logic, but also irony in order to create new knowledge in his discussions. In literature, irony is used as poetic language though using symbol of different word to represent the nature of something else.