"Communication is the transmission of an element from a sender to a receiver." The defect is that communication is not something merely material: it is almost never something as exact as it is expressed in the definitions. In reality it is a symbolic, immaterial process, and the message is not something solid or closed. It is interpretable. Physicalist definitions contribute very little to the study of communication, they do not tell us anything, it seems simple when in fact it is not. NOT all messages are interpreted as the sender's intent is to be expected. Communication is quite an exceptional achievement, very difficult to achieve. It is not an easy process. Not all experiences reach the receiver the same. We give a basic definition of what communication is: "Create, transfer and preserve experiences between individuals (not only humans)". This is a nonfiscalista definition. First we create an experience, second, we transfer it, and third, it is possible that it is preserved in the memory of the receiver.