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There is no such thing as an "objective reality".

Physics by definition deal with OBJECTS, psychology, sociology, economy, ethics by definition deals with SUBJECTS/persons. So economy is and should be SUBJECTIVE and deal with SUBJECTIVE reality. Subjective things are real, your pain is real even if others do not feel it.

At one level, I agree with you. In fact, we could go further and put physics into the subjective category -- because each observer has a subjective view of even objects.

A great deal of social science today is practiced on the subjective basis that you describe. To a postmodernist, there is no single truth out there -- and everyone's subjective take on society is equally valid. Similarly -- every culture is morally equivalent.

I simply said that economists tend to lean toward positivism in their work. That's why they measure things, plot trends, etc.

The alternative is something we see in the MSM every day -- subjective reporting substituting for "objective" (as in just the facts ma'am) reporting. Editorializing mixed in with reporting.

If we can't agree that there is an external reality, that can be measured objectively -- then how can anyone have a debate with anyone else about anything? The answer to every debate would be: "you're right, and so am I."

By example, evolution is far from being objective. Supporting evolution is all about what you prefer to believe even though the evidence does not support it. Science used to be objective. It isn't any more. It's agenda driven.