I shall suggest on the contrary that all communication relies to a noticeable extent on evoking knowledge that we cannot tell and that all our knowledge of mental processes like feelings or conscious intellectual activities is based on a knowledge which we cannot tell.
The question I love to get asked is: 'What's the hardest part of your job?' And literally the answer is probably real sad but it's to just to be me. Like it's really hard because I think people you know have a set idea of what a pop star should be.