Explanation : Fields of experience, including the teacher's
teaching and other experiences; and also
the life experiences shared by the students,
introduce valuable inputs of knowledge
and skills in to classroom communication.
Physical infrastructure of the classroom
has negligible effect if classroom
communication is otherwise effective;
conditioned feedback does not indicate
learning outcomes have been attained
or not; linearity of message eliminates
feedback which is an important indicator
of the learning that has happened.