A theory is a set of ideas, principles, or hypotheses that explain and describe a particular phenomenon or aspect of the world. It is based on observations, data, and experiments collected to support its validity.
Theories are used in various disciplines, such as science, psychology, sociology, and other areas of knowledge.
They are fundamental for understanding and predicting natural and social phenomena and can be revised and modified as new evidence accumulates.
A well-established theory is supported by solid evidence and has a high degree of confidence in its truthfulness.