Published December 31, 2014 Updated July 19, 2020 

This article argues that the concept of rationality should be diversified and understood in the plural. Rather than treating it as a fixed noun, I suggest we should contextualize “reason” and look at propositions and their supporting arguments instead. “Reasons” are statements found in the process of thinking about something “real,” which means that there is, beyond the real, not only language as the medium of expression, but also a mediating psychic process-like fluidity which is itself without pre-determined direction. I am skeptical towards Hegel’s optimistic idea that “the real is rational.”  More research is necessary in order to understand the relations between reality and the mind, and in the end, we will still ask, what does it mean for us? Philosophical reflection is “really” a three-way conversation between me, others like me or unlike me, and whatever appears in the place of reality. We talk to each other about what is real, and how this reality functions in itself, as well as for us.  But what is the role of rationality in all of this? 

The role of reason in the history of philosophy.


We habitually take “reason” to be a faculty of the mind. The “Universal Declaration of Human Rights” states that humans are “endowed with reason and conscience…” Philosophers often speculate about the extent of reason in the human animal, or they question the universality of reason (postmodernism). Enlightenment philosophy gets criticized for being too optimistic about the power of rationality. And yet, modern sciences have been extremely successful in applying principles of research to their fields that are themselves supported by a form of thinking which is based in logic and mathematics. The philosopher Jürgen Habermas distinguishes between emancipatory and instrumental reason; this distinction raises the question how much of human reality is governed by reason, and whether reason itself is not governed by other principles, like emotions or a “will to power”. Adorno goes a step further and claims that if instrumental reason is fully unleashed, it is not merely irrational, but drunk with its own power, which leads to collectivized aggression, or self-destruction.

Reasoning tries to establish causes, but the idea of causation is itself a physical and philosophical problem. How exactly does one event cause another? Aristotle distinguishes four types of causes that constitute anything: Formal, material, efficient, and final. He creates a conceptual system based on human experience, and then applies it to nature. Even though this approach is empirically unverifiable (what is a “form,” for instance?) it is convincing because it is so human. After Aristotle and Thomas Aquinas, philosophical reasoning follows along these lines, thereby perpetuating an imagined structure of reality. It is worthwhile to study this model, because it teaches us about the errors of philosophy. It took centuries in the history of Western thought to overcome it. Today, philosophers are more self-aware and often engaged in elaborate attempts to explain themselves. This leads to more modest approaches. One can start from a simplified philosophical position and ask: what needs to be explained, and why? Philosophical reflection has a tendency to end nowhere, unless we focus it through particular interests. Some people prefer to stay with questions and call this a philosophical stance; others provide answers that are often pseudo-philosophical arguments leading to highly speculative or ideological propositions.

Reason breaks down into arguments that are the elements of human interactions. Also, the actual use of reasoning is never de-contextualized. The attempt to theorize something is always the response to a perceived problem. It is the backbone of science as well as the key ingredient for a democratic political process. We have formalized ways of reasoning that are based on logic, and the discipline of rhetoric teaches us how to apply these argumentative structures to human interactions. What are the larger purposes served by the process of argumentation? Argumentation solves problems, and facilitates almost all aspects of life, because life is mostly a process of working through conflicts. Argumentation is  a means of collective judgment and decision making, and therefore an important tool of governance. Argumentation also is a way of knowing, because we decide what to believe through the testing of claims. And it helps us to achieve the goals of a democratic society by cultivating the skills of critical thinking, reflective judgment, and active participation.  A culture of argumentation and debate is vital support for a robust public sphere. I will briefly describe these outlined goals and functions of reasoning. Let’s start from the end: 


How do controversies end?


An argument is a statement that claims something. You use an argument in order to make a point od some sort. This point can lead to another argument, and so forth. We call this a discussion, a political or scientific debate, and in its totality, this process forms the progress of philosophy. Philosophical inquiry may be eternal questioning, but as a social activity, it can end in various ways.



Argumentation is a means of collective judgment and decision making


The same force of reason is applied in philosophy as well as in our individual and social lives. The strongest tool we have is the power of the mind.



Argumentation is a way of knowing


This aspect of reasoning is closely related to the traditional philosophical concept of reason as discovery of the intelligible structure of the world. Knowledge is intricately intertwined with belief systems, as the attempts to justify modern religions demonstrate. Roughly speaking, we can distinguish four ways of knowing and believing: 



The limitations of reason


Scientific knowledge has its limitations. If scientific method were the only acceptable path to knowledge, then we would be unable to know about some of the topics that concern us most. There would be no way to know about values, probabilities, predictions, recommendations for action, situations with ethical or legal dilemmas that require judgments based on the unique combination of values and circumstances. Simple questions like: where do you want to go for vacation? cannot be answered based on science. In these cases, the alternative is to look for analogues that achieve many of the same purposes as the scientific method, but that work for these harder-to-judge topics. Argumentation is such an analogue. It assumes that there is mutual agreement on the procedures to be followed. The norms of candor and sincerity must be shared, and reflective judgment is the goal. The knowledge that one’s views may be challenged creates an incentive to search for arguments of high quality.

The view that argumentation is an approximate way of knowing has some important implications:

When we reflect on reason as it is used in the big tradition of philosophy, or on the patterns of arguments that have practical use in almost every aspect of life, we learn that even the most mundane cases of argumentation participate in larger purposes. At a minimum, the freedom of speech enables a free society; and this idea is best expressed in Rosa Luxemburgs statement that “freedom is always the freedom of the one who thinks differently.” Controversial argumentation is itself philosophically justifiable. Philosophical reflection and its expression through dialog, debate, and controversy, is a primary way of improving the quality of our lives, and understood in this light, a “culture of argumentation” is something to be embraced rather than despised. 


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