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Good sense


Common sense is a basic ability to perceive, understand, and judge things that are shared by ("common to") nearly all people and can reasonably be expected of nearly all people without need for debate.

The everyday understanding of common sense derives from philosophical discussion involving several European languages. Related terms in other languages include Latin sensus communis, Greek κοινὴ αἴσθησις (koinē aísthēsis), and French bon sens, but these are not straightforward translations in all contexts. Similarly in English, there are different shades of meaning, implying more or less education and wisdom: "good sense" is sometimes seen as equivalent to "common sense", and sometimes not.

"Common sense" has at least two specifically philosophical meanings. One is a capability of the animal soul (Greek psukhē) proposed by Aristotle, which enables different individual senses to collectively perceive the characteristics of physical things such as movement and size, which all physical things have in different combinations, allowing people and other animals to distinguish and identify physical things. This common sense is distinct from basic sensory perception and from human rational thinking, but cooperates with both. The second special use of the term is Roman-influenced and is used for the natural human sensitivity for other humans and the community. Just like the everyday meaning, both of these refer to a type of basic awareness and ability to judge that most people are expected to share naturally, even if they can not explain why.

All these meanings of "common sense", including the everyday one, are inter-connected in a complex history and have evolved during important political and philosophical debates in modern western civilisation, notably concerning science, politics and economics. The interplay between the meanings has come to be particularly notable in English, as opposed to other western European languages, and the English term has become international.

In modern times the term "common sense" has frequently been used for rhetorical effect, sometimes pejorative, and sometimes appealed to positively, as an authority. It can be negatively equated to prejudice and superstition, or on the contrary it is often positively contrasted to them as a standard for good taste and as the source of the most basic axioms needed for science and logic. It was at the beginning of the eighteenth century that this old philosophical term first acquired its modern English meaning: “Those plain, self-evident truths or conventional wisdom that one needed no sophistication to grasp and no proof to accept precisely because they accorded so well with the basic (common sense) intellectual capacities and experiences of the whole social body" This began with Descartes' criticism of it, and what came to be known as the dispute between "rationalism" and "empiricism". In the opening line of one of his most famous books, Discourse on Method, Descartes established the most common modern meaning, and its controversies, when he stated that everyone has a similar and sufficient amount of common sense (bon sens), but it is rarely used well. Therefore, a skeptical logical method described by Descartes needs to be followed and common sense should not be overly relied upon. In the ensuing 18th century Enlightenment, common sense came to be seen more positively as the basis for modern thinking. It was contrasted to metaphysics, which was, like Cartesianism, associated with the ancien régime. Thomas Paine's polemical pamphlet Common Sense (1776) has been described as the most influential political pamphlet of the 18th century, affecting both the American and French revolutions. Today, the concept of common sense, and how it should best be used, remains linked to many of the most perennial topics in epistemology and ethics, with special focus often directed at the philosophy of the modern social sciences.


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