Distance education, no consultation on various matters. So much is known about the content. And the student and the instructor is unable to interact with each other.
There are no direct studies of people consulting the various instructions, rarely knew about the content and learners with instructors are not allowed to speak to interact with each other.
Distance Learning is not a man, providing consultation and advice, and therefore don't know anything about it, and to the content that the students who are not able to teach them to talk.