1. In common, everyday language when you have a
theory it means you simply have a guess. It doesn't have to be supported by
evidence or fact.
2. In the scientific community, an explanation supported by a evidence and is
logically sound.
1. "My theory is that Jane stole
the cookie from the cookie jar!" - Jack after he found no cookies in the cookie jar.
2. The theory of Evolution logically explains why life is so diverse, and the evidence that supports it includes
fossils, DNA, living specimens, and
bacterial research.