What are the weaknesses of berlo's model of communication?

The weaknesses of Berlo's communication model can only be judged in the context of what the user intends to use it for. Clearly by its language, Berlo's communication model concerns sending a message from one person to another and is not concerned with the hardware. Since Berlo's model concerns people a major weakness is that it is unidirectional and lacks a "feedback" loop. Communication without feedback is like the sound of one hand clapping. If we believe, as constructivist thinking teaches, that meaning is a personal construct then during communication we try to establish meaning for ouselves which does not preclude the eventuality that it may differ from that held by the person transmitting the message. It also means that communication must be a two-way affair. Androcles