When it comes to using Facts versus Opinions in research, which one is better or more reliable? Why is that? Why is it so important to have reliable/accurate data?

What happens when a company acts on data that could be only opinion and might not represent the consumer segment as a whole?

Why is using the 5 Ws essential in research? How does it help to discovering facts?

please provide an example of a hypothesis, channels of analysis, elements of research methods