By definition, a pair of inherently unmeasurable, non-stationary systems, are coupled to produce an inherently measurable stationary system. - Gordon Pask

Conversation Theory is a summarization of our assumptions and rationale from this early period. Conversations are behaviors, but special kinds of behaviors with hard-valued observables in the form of concept sharings, detected as "understandings." Conversations are, we believe, the first basic data of psychological, social, or educational theory. We see later that people can even have conversations with themselves. Conversations which may lead to concept sharing need not be verbal. Often they are gestural, pictorial, or mediated through a computer interface.

There is a theory of learning and teaching together and that is all. Results from many studies support this point of view as, also, does the evidence of commonsense. So, to be dogmatic (but with confidence) learning implies teaching and teaching implies learning. Sometimes the teacher and learner responsible for th joint process are obvious (a student at a desk and another person wearing an academic cap and gown). Sometimes, the teacher and learner are not so obviously distinct and turn out to be unexpected but, once-indicated, intuitively plausible entities.

A computer that issues a rate demand for nil dollars and nil cents (and a notice to appear in court if you do not pay immediately) is not a maverick machine. It is a respectable and badly programmed computer... Mavericks are machines that embody theoretical principles or technical inventions which deviate from the mainstream of computer development, but are nevertheless of value.