This document discusses speech act theory, primarily based on the works of philosophers J.L. Austin and John Searle, which posits that language does more than convey meaning; it often performs actions. It categorizes utterances into constatives and performatives and explores the components of effective communication, including locutionary, illocutionary, and perlocutionary forces. The document also identifies five types of speech acts as defined by Searle, emphasizing the contextual and goal-oriented nature of communication.