For thousands of years, mediums and shamans have been in contact with a type of communicator that we don't see and cannot touch. These types of communicators can't be perceived through our five senses. And the so-called "normal" people (who are not aware that they might have mediumistic capabilities) often say that they feel, that they are in contact with something/somebody in a way that other people can't understand or believe. Some people feel that they will be guided this way somehow. So, this way of communication is not new.
TransCommunication takes place with partners we can't perceive by the use of our five senses. That is, partners inhabiting realms beyond our perception.
This situation–to be unable to perceive through the five senses our partners in communication–causes many people to conclude that this type of communication is impossible. If they cannot perceive a communication partner, then they deny the existence of that communication partner.