Science
Science (from Latin scientia , meaning "knowledge") [1] [2] :58 is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe . [a] Contemporary science is typically subdivided into the natural sciences , which study the material universe ; the social sciences , which study people and societies; and the formal sciences , which study logic and mathematics . The formal sciences are often excluded as they do not depend on empirical observations. [3] Disciplines which use science, like engineering and medicine , may also be considered to be applied sciences . [4] From classical antiquity through the 19th century, science as a type of knowledge was more closely linked to philosophy than it is now, and in the Western world the term...