Cohérence

Cohérence refers to the quality of being logical and consistent. It signifies that different parts of a whole fit together harmoniously, creating a unified and understandable structure. In language, coherence is achieved when ideas flow smoothly from one to the next, forming a meaningful text. This is often facilitated by the use of transition words and phrases that connect sentences and paragraphs, guiding the reader through the argument or narrative. A coherent piece of writing avoids abrupt shifts in topic or logic, ensuring that the reader can follow the train of thought without confusion.

Beyond language, coherence is a concept found in various fields. In logic and philosophy, a coherent system is one where all its propositions are mutually supportive and free from contradiction. This means that accepting one part of the system implies accepting all other parts. In science, experimental results are considered coherent when they align with existing theories or when a new theory explains a set of observations in a unified and consistent manner. The principle of coherence suggests that reality, or at least our understanding of it, tends towards order and predictability, where elements are not random but rather interconnected and understandable. The absence of coherence, conversely, often indicates a flaw, a lack of understanding, or a breakdown in communication.