= new reply since forum marked as read
Many of these being constructed from knowledge imparted by aliens, of course. 
You were born under the sign of: Jerk. -- just kidding. Don't alert, really, it's just a joke.
* There is no force, known or unknown, that could possibly affect us here on Earth the way astrologers claim.
Uh, no. There is no force that YOU know of. There is no force currently understood by our Newtonian scientists. (I suspect quantum scientists are quite a bit closer.)
* Astrologers tend to rely on our ability to remember hits and forget misses. Even an accurate prediction may be simple chance.
Well, that's your interpretation, which I consider as accurate as anything else you've so far said. Astrologers don't even give such a thing a thought -- they don't need to. CHARLATANS and scam artists might, but they're very few and far between among astrologers because the payout just isn't there.
* Study after study has shown that claims and predictions made by astrologers have no merit. They are indistinguishable from chance, which means astrologers cannot claim to have some ability to predict your life's path.
Well, from my perspective, prediction is difficult -- it helps if the astrologer is part psychic and many are. Prediction is difficult because the various parts and pieces can all mean so many different things. I'll explain a little more about that in a minute. First let me dispense with this little bit of nonsense:
* There is harm, real harm, in astrology. It weakens further people's ability to rationally look at the world, an ability we need now more than ever.
And *I* believe we need the transcendent, the subjective, the heart-centered, the soul-centered, the numinous, the mysterious, the unexplained and unexplainable, in short the spiritual more than ever. It is our over-reliance on rationality at the expense of listening to and heeding our hearts and souls that has led us to where we are today. YMMV, of course. And part of that is becausse we are more than our rational minds: we are Spirit having a physical existence. We cut off our connection to Source at our own peril, and that's what a 100% adherence to and reliance on the purely rational will do for you. Rational + Subjective = Whole Brain. They are both needed, even in the strictest scientific settings.
Nor is there any evidence at all that your fear of astrology rotting practitioners' or followers' minds has any merit whatsoever. 
See my next post for more on predictability and repeatability.
THIS Gaugelin?
Gauquelin's own conclusions were subject to change throughout the course of his life due to his research over several decades, and in the beginning after his initial studies he was very critical of certain widely accepted beliefs in astrology, particularly the zodiacal signs, which he extensively tested without finding results:
"It is now quite certain that the signs in the sky which presided over our births have no power whatever to decide our fates, to affect our hereditary characteristics, or to play any part, however humble, in the totality of effects, random or otherwise, which form the fabric of our lives and mould our impulses to action." (The Scientific Basis for Astrology, 1970)
Although he always remained highly critical of astrology in general, his attitude towards its existence changed as his studies progressed in the study of the diurnal cycle, which is related to the astrological houses.
"Subsequent results only confirmed and amplified my initial discovery about the physicians. On the whole, it emerged that there was an increasingly solid statistical link between the time of birth of great men and their occupational success. ... Having collected over 20,000 dates of birth of professional celebrities from various European countries and from the United States, I had to draw the unavoidable conclusion that the position of the planets at birth is linked to one's destiny. What a challenge to the rational mind!"[3] (Neo-Astrology, 1991)
http://en.wikipedia.org/wiki/Michel_Gauquelin
And this one: http://www.astrologycritics.com/cosmic-influences-on-human-behavior.html
As for picking out your own chart, here's what a chart looks like:
and anyone is surprised that no one could pick out theirs? Please.
Who decided that matching charts to the California Personality Index was a good and viable test? I am not myself familiar with the test, are you? What's in it? It probably measures things not easily detected via astrology -- and vice versa!
You know, anyone can design tests and "experiments" that will ensure failure, or just through utter incompetence or utter ignorance (of astrology) design tests and experiments that are sure to fail. Get some astrologers and "scientists" to agree on some tests and then see what happens. In the meantime, what you've dredged up doesn't meet the definition of scientific proof to me:
...evidence which serves to either support or counter a scientific theory or hypothesis. Such evidence is generally expected to be empirical and properly documented in accordance with scientific method such as is applicable to the particular field of inquiry. Standards for evidence may vary according to whether the field of inquiry is among the natural sciences or social sciences[citation needed]. Evidence may involve understanding all steps of a process, or one or a few observations, or observation and statistical analysis of many samples without necessarily understanding the mechanism.
If you don't even know the right questions to ask, you aren't going to get the right answers.
Now -- as I said elsewhere, this has been interesting and fun, but too time-consuming. I won't be responding further.
Greek myths have endured for centuries. But is does that mean Zeus sitting on the mountain directing our fates? Or fairies really are in the woods? Of course there's something to these, but that something is a reflection of the human mind, of ourselves, how we operate.
My basic perception of reality comes from science. In order for me to believe that there is an external reality to astrology, an astrologer has to predict statistical trends in people's fates/behaviors who don't themselves believe in astrology, and the studies have to back it up. Studying it for years will shape my brain to see astrological wonders all around me, but without that predictive component its not part of the external material world.
I hope you don't take my comments as devaluing your study. In my paradigm, you freaking out about that is like somebody saying: "I spent years believing dollar bills had value, and now you're telling me that they're just pieces of paper?" Both are true. They have value, and that's because people believe these pieces of paper have value. Belief is a very powerful thing.
edit: Oh, I read your other post and you might be interested, my chart is all Pisces and Virgo so this is my house: the mystical spiritual as it relates to the analytical thinking of science. Yes, it fits me well, but as a rational thinker, I cannot rule out that my personality was shaped by my time in Bohemia. What I can tell you is that you're lecturing the wrong guy on the need to study occult science! 