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A '''theory''' is an explanation.

A '''theory''' is an explanation.

*In layman’s terms, if something is said to be “just a theory,” it usually means that it is a mere guess, or is unproved. It might even lack credibility. But in scientific terms, a theory implies that something has been proven and is generally accepted as being true. [http://wilstar.com/theories.htm]

*In layman’s terms, if something is said to be “just a theory,” it usually means that it is a mere guess, or is unproved. It might even lack credibility. But in scientific terms, a theory implies that,  although the subject cannot be proven, it is supported by evidence and is accepted as being true in the scientific community until a better theory is created. [http://wilstar.com/theories.htm]

The term "theory" is often used outside of the realm of [[physical science]], such as in [[music theory]], [[number theory]], or [[Marxist theory]].  

The term "theory" is often used outside of the realm of [[physical science]], such as in [[music theory]], [[number theory]], or [[Marxist theory]].