Astrology and Science

Tell me one theory in Science where the exact logic behind it is fully known. Right from our birth we go through various stages where we learn various theories. We satisfy ourselves by saying that we have understood the logic behind it. But if we keep questioning some points in that theory then it boils down to saying that "That is a fact" and there is no more explanation. So basically, we evolve through various degrees of logic before we finally come to a stand still and then there is no more explanation. We stand to accept that as a fact (atleast for a period of time until some one digs deeper) Astrology is not much different. My friend Aswin says that the astrologers use very old data. Accepted, their data is outdated. Let their predictions be wrong. So that means that, the usage of the same methods today is wrong. But how can that totally refute the very basics of Astrology. And one more thing, people didn't make laws for astrology and then leave it there. That too was developed as a Science. The conventions were different those days and everything was referred to as a "God". There were people who constantly worked on it increasing it's predictive capabilities. They didn't sit dumb. By they I refer to the various scholars of the yesteryears. Astrology didn't develop in India alone. The science simultaneously and independently (or so I know) developed elsewhere as well. But the principles of prediction are so similar. How do we account for that. I learnt some principles of Astrology without questioning it's fundamentals. I was wrong in that. But there is so much of Science and Mathematics in it. The age-old principle of teaching was "You believe what the Teacher says, then you question it and learn more" or so I believe. The principles of Prediction are so vague and loose that it is not correct to base the predictions on only one factor. You can't relate predictions to one or even a hundred factors and get some statistical data from it saying "this is no better than chance" I wouldn't read or believe any of those. When you question those principles it is equivalent to questioning a Physicist "What do you think is the grand Unfied theory today?" Today's Science is not enough to check the validity of astrological predictions. That doesn't mean that you don't question it. But the fact remains that you can't get answers which is so for many scientific problems. Another point that I would like to make is about those weekly daily or yearly predictions. I really tell you. That is just not Astrology. Stop quoting them as examples where Astrology has failed. Today, Astrology has gone into the hands of wrong people and they are exploiting it to their benefits. Say there are 12 Billion people on earth. How can a billion people have the same predictions. Just doesn't make sense. All these sciences or so called "sciences" of astrology, Vaasthu Shaastra and so many more are as far as we know very very vague. As far as I believe we are not able to accept it because of the circumstances under which we have grown. I am not able to answer anybody who at the end of a very long fight asks me "O.K tell me one guy who always predicts correctly" There are no Astrologers like Physicists or Mathematicians. That, there is so much of Science in Astrology or that it developed simultaneoulsy elsewhere or that the principles are similar doesn't answer the question. But we must accept the fact that we do not know much about it, and unless somebody comes to know more about it, we (who don't know anything) shouldn't comment on it's capabilities.