https://en.wikipedia.org/wiki/ScienceScience is a rigorous,...

https://en.wikipedia.org/wiki/Science

Science is a rigorous, systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the world.^[1][2] Modern science is typically divided into three major branches:^[3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; the social sciences (e.g., economics, psychology, and sociology), which study individuals and societies;^[4][5] and the formal sciences (e.g., logic, mathematics, and theoretical computer science), which study formal systems, governed by axioms and rules.^[6][7] There is disagreement whether the formal sciences are science disciplines,^[8][9][10] as they do not rely on empirical evidence.^[11][9] Applied sciences are disciplines that use scientific knowledge for practical purposes, such as in engineering and medicine.^[12][13][14]