Do you think it's wise for scientists not to accept a theory immediately, even if the theory has alot of evidence to support it?

Yes, because even though a theory has a lot of evidence to support it, it is not always true. Theories are different from facts because they are not 100% This is proven many times in history. For example, many people used to believe that the sun rotated around the sun. It was not until many years later did they realize there mistake. 

The answer is observations and interpreting.

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