Homeopathy died a long long time ago as a serious method of treating the ill (that is if it ever was one, which is arguable) but in James Randi recently pointed out a great article from bad science.net. You can find it here, and it’s a compelling, informative and well-written example of logic and science destroying the basis of homeopathic “medicine.” But I am very very dubious that homeopathy will die any time soon. It’s managed to stay profitable for some time, even though it’s completely nonsensical.
I really think that it exists only because so many people don’t actually know what the word means. The first thing one generally thinks upon finding out the basis of homeopathy is “What? Really? Well that’s just plain stupid!” And you’re right! It is stupid! Homeopathy is nonsensical, illogical and downright idiotic! You don’t have to be a doctor or a chemist to look at the very basic premise of it (that things are effective when diluted and more effective when more diluted to the point of not a single molecule being present) to realize that the implications of this are just loony and completely absurd.
Generally homeopaths will try to defend their “treatments” with a lot of talk about quantum particles and energy fields and water memory. These, of course, are complete diversions. If you need to think about how homeopathy works, you’re thinking about it too hard. There are many things in science which are counter-intuitive at first glance or which are not what you would expect: Time being a non-constant, objects of different mass falling at the same acceleration, inward acceleration during circular motion, light being both a particle and a wave. BUT: Homeopathy is not one of these. It seems stupid because it *is* stupid. It’s absurd, laughable, counter-intuitive, illogical, ridiculous.
The answer to the question “How does homeopathy work” is the obvious one: it doesn’t. It never has and numerous studies have been done documenting this. At best, it is a placebo. That’s it.