Communication breaks down when there is no drive for knowledge....TTC M.Sugrue

The purpose and function of the dialectic is to find the optimisation point or balance between competing, contradictory or opposing truths by first of all defining the goals and terms of the communication or dialog that takes place between beings on an equal basis. Definition of terms and the objects of discourse are the first and foremost conditions of the dialectic.

It seeks the necessary agreeable ground on which a dialog between equals can take place so that the common or convergent or objective truth can be arrived at as well as have some notion of the degree of divergent or subjective truths.  The dialectic seeks the common ground and its boundaries between people - specifically these are the truths of the social political conditions. It is the indispensable method for formulating rules and laws by which intelligent beings must govern themselves. In this goal of governance, rhetoric is required  whenever the boundaries are fuzzy : when the existing norms, rules and laws run into trouble or run into exceptional conditions where the intuitive has to be evoked. Poetry is the last resort : when all has failed and the mass of men still fail to see the writing on the wall or are paralysed by ineptitude and inaction.

The most important application of the dialectic is in its pursuit of the application, limitations, exceptions of law and the corruptibility of law enactment and enforcement. The dialectic seeks the common grounds of rules by which men must govern themselves : its highest goal is to formulate laws and make decisions that are optimum and efficient in public affairs and the formulation of fundamental concepts and abstractions in discourse about human nature and purpose. Thus the dialectic is fundamental to basic human communication that seeks a higher social order.

It is not so obvious that this ideal is far from accomplishment by human beings, and only one or two societies have partially succeeded in coming near to this ideal. The developments in science and technology has made the attainability of this ideal very difficult and complex .

The dialectic can only succeed when there is some fundamental common cause that the parties to a dialog are uncompromisingly committed to.

In the truly creative dialectic, there is no enemy, no antagonist - only another person/s  that share the same purpose and strive towards the same objective ( common ) end or goal. Only the approaches, backgrounds, methods and means differ. And this difference is essential : for to follow the same path, the same techniques the same exact methods leads not to a genuine understanding or insight into human nature, its potential and its betterment, but only a dull, monotonous repetition of the same stuff over and over making it dead and degenerate, until it is smashed, shattered or devoured by the unknown and those that cling desperately to it are the sheep that become prey to the ceaseless march of time and the inevitability of either the unknown or of death.