Wilbur Schramm introduced an influential model of communication that illustrated the importance of interpersonal communication. He is considered the father of communication studies. Schramm's model evolved over time, starting as a simple model of a message being sent from a source and encoded, then received and decoded at the destination. Later versions incorporated the idea that only shared experiences between parties can truly be communicated, and an even more advanced model viewed communication as an interactive process with feedback between both parties. Schramm made significant contributions to establishing the academic field of communication studies.