Homeopathy is the belief that if you take a substance that causes symptoms that are similar to the symptoms of an affliction or disease, and then dilute that substance in water enough, then that water becomes an effective treatment for that disease (not just the symptoms of that disease, but the disease itself.)
For example, if you suffer from sleeplessness, they believe that if you take caffeine, dilute it into water, and then re-dilute that water over and over until basically every single caffeine molecule has disappeared from it, and then drink a drop of the end result, it will help your sleeplessness.
Needless to say, this is just a placebo effect. However, proponents of homeopathy go further and claim that homeopathy can cure actual diseases, such as viral and bacterial infections. (Why would diluted symptom-causing substance do something to the actual viruses or bacteria is anybody's guess.)
Ok, so it's a placebo. It's not really dangerous, is it? But it can be. It can potentially be very dangerous.
And I'm not talking about the danger of someone going off actual medication for their disease in favor of homeopathy. This is, of course, a danger in itself (and people have demonstrably died because of this exact reason; there have been actual court cases and convictions.) However, I'm talking about something else.
Recently, Fran Sheffield (the director of Homeopathy Plus Australia) put up a petition at