1 Historical review: Some topics are better understood if a brief historical review of the topic is presented to lead into the discussion of the moment. Such topics might include "a biographical sketch of a war hero," "an upcoming execution of a convicted criminal," or "drugs and the younger generation." Obviously there are many, many more topics that could be introduced by reviewing the history of the topic before the writer gets down to the nitty gritty of his paper. It is important that the historical review be brief so that it does not take over the paper.
Hegelian dialectic, usually presented in a threefold manner, was stated by Heinrich Moritz Chalybäus  as comprising three dialectical stages of development: a thesis , giving rise to its reaction, an antithesis , which contradicts or negates the thesis, and the tension between the two being resolved by means of a synthesis . In more simplistic terms, one can consider it thus; problem → reaction → solution. Although this model is often named after Hegel, he himself never used that specific formulation. Hegel ascribed that terminology to Kant.  Carrying on Kant's work, Fichte greatly elaborated on the synthesis model, and popularized it.