Well Wester doesn't seem to want to budge.

Wow, what a heap of anti-fanboy science desperate crap.

Well if that's his counter argument may be I've already won.

Bad Astronomy has a very good article up on astrology, way better then mine.

I'll quote some sections to further reinforce the one I write last night, I covered a lot of the actual science behind it, but only had a paragraph on things they actually predict and say regardless.

Still having doubts? My friend and master skeptic James Randi performs a wonderful demo of how easily people are fooled by astrology. He went into a classroom, posing as an astrologer, and cast horoscopes for all the students. He had them read and rate the accuracy, and they almost overwhelmingly rated the horoscopes as accurate. The kicker? He had them pass around the horoscopes, and the students saw that every horoscope was exactly the same. It was worded vaguely enough that nearly everyone in the room thought they were being well-described. The horoscopes were so vague they matched nearly everyone, and so their predictive power was meaningless. It was all in the students' heads.

Everybody rates the same piece of text accurate for them!

So as I showed above, there cannot be an effect on us by any "astrological force", no matter how we assume it acts. No matter what, the evidence contradicts such a claim. Also, many astrological claims, even apparently accurate ones, may be nothing more than sleight-of-hand. But still, that does not mean all astrology is wrong. Is there anything that really shows astrology is bunk? Yes, there is.

In the spirit of giving the astrologers more rope, so to speak, let's assume that despite all the scientific evidence against such a thing, there really is an effect on us by the planets. If it exists, it must be measurable, and for astrologers to be able to use it to cast horoscopes, their claims must be consistent. After all, if a force cannot be measured, it cannot have an effect on us, and if astrologers say such a force exists, then all their claims must be based on that force, and should be consistent with each other.

Surprise! Astrologers' claims are not consistent. They're not even internally consistent.

I could show you nearly endless examples of how, say, Sun-sign astrology horoscopes (the kind you see in your newspaper) are completely inconsistent with each other. I could even talk about an astronomical term called precession, which shows that Sun-sign astrology is rubbish anyway. I won't bother, because in the end I think all that stuff is distraction; astrologers will always come up with some lame excuse about how their claims are still correct, when that other astrologer's claim is nonsense (of course, the other guy says that too).

So let's cut to it: astrologers claim they get results that are consistent. There have been studies, tests, experiments, all sorts of things to check this claim. The bottom line is, their claims are wrong.

How do I know? Because I read a wonderful paper, a very thoroughly researched, well-documented, and referenced paper, which shows precisely where astrology fails all its tests. This paper is titled Is Astrology Relevant to Consciousness and Psi?", and was written by Geoffrey Dean, a long-time astrology researcher, and Ivan Kelly, a professor of Educational Psychology and Special Education at the University of Saskatchewan.

Good point I completely forgot last night. If they base their claims are any force, then all astrologers claims would be consistant, go get two of todays newspapers and read the horoscopes they're completely different!

Anyway I highly recommend that article it's really good.