Conversation Theory regards social systems as symbolic, language-oriented systems where responses depend on one person's interpretation of another person's behavior, and where meanings are agreed through conversations. But since meanings are agreed, and the agreements can be illusory and transient, scientific research requires stable reference points in human transactions to allow for reproducible results. Pask found these points to be the understandings which arise in the conversations between two participating individuals, and which he defined rigorously. Conversation Theory describes interaction between two or more cognitive systems, such as a teacher and a student or distinct perspectives within one individual, and how they engage in a dialog over a given concept and identify differences in how they understand it.
The Derivation of a concept from at least two concurrently existing topics or concepts
Alternative derivations may be shown with conjunctive (AND) and disjunctive pathways (OR). This is logically equivalent to T1 = (T2 AND T3) OR (T4 AND T5)
Any two concepts can produce the third, shown as the cyclic form of three concepts -- note that the arrows should show that BOTH T1 and T2 are required to produce T3; similarly for generating T1 or T2 from the others.
The shade of the bar looks invariant in isolation but variant in context, in (favor of) sharp contrast with the color gradient background, hence an innateillusion we have to reasonably interpret and overcome as well as the mirage. Such variance appearing seasonably from context to context may not only be the case with our vision but worldview in general in practice indeed, whether a priori or a posteriori. Perhaps no worldview from nowhere, without any point of view or prejudice at all!
Ogden & Richards (1923) said, "All experience ... is either enjoyed or interpreted ... or both, and very little of it escapes some degree of interpretation."
H. G. Wells (1938) said, "The human individual is born now to live in a society for which his fundamental instincts are altogether inadequate."