How does the concept of "projection" (psychology) apply to astrology?

[Morose]

Easy.

Leo: I really don't like the fact that you talk so much and hog the spot light Gemini. Its a major concern and a lot of people don't like this about you! So stop.

Gemini: What? I'm actually nothing like you described? I was loud, and attention seeking, one time. Why are you projecting your own insecurities on to me? I was just on facebook and many people said how loud, attention seeking and annoying you were. Don't push your problems on to me.

There you go. Projection is a common defense mechanism. We all do it at some point. Not all of us, but most.

Oh and Astrology and Psychology are actually not the same thing. Thats just absolutely relative. But they are not the same thing.. i can see where someone would get that idea.