A theory can be considered good when it is:
1. Testable
2. Parsimonious (The simpler the better)
3. Explains the relation between at least two variables
4. Has an explaining and an explained factor
they though he was crazy and became his critics
if marco polo aproves it
It is supported by data.
One is based on scientific data the other is based on the unproven.
No. It's never correct to say that anything is "only" a theory or "just" a theory or"merely" a theory or "nothing but" a theory or an "unproven" theory.A theory can never be proven, but it can be dis-proven in two seconds. If a theoryhas been around for three hundred years and it hasn't been dis-proven yet, thenthat's a pretty good indication that you can trust the statement it makes.
predictability
predictability
What the heck?? That makes no sense.
Not necessarily
too much theory is not a good thing because it imposes external thoughts and stifles creativity
Not at all. That it hasn't been proven is what makes it a theory. Once proven, it becomes a law.
nuthing