Do you believe in creation or evolution?

[goti71]

Just pointing out, that if there was plenty of 'evidence' it would no longer be a theory.

Semantics. You did this with the word "kinds" too.

In everyday usage, "theory" often refers to a hunch or a speculation. When people say, "I have a theory about why that happened," they are often drawing a conclusion based on fragmentary or inconclusive evidence. The formal scientific definition of theory is quite different from the everyday meaning of the word. It refers to a comprehensive explanation of some aspect of nature that is supported by a vast body of evidence.

Think of how a detective solves a crime without observing it.

This ^^

Beat me to it with a better explanation.