Take the "Tetenterre Challenge"
- Homeopaths claim that their so-called "remedies" are effective.
- By definition, something that is effective has an effect.
- If something has an effect, that effect can be observed.
This offers a simple double-blind, randomised test for the claims homeopaths make:
- An experienced homeopath selects sufficient quantities for a dozen provings of two remedies whose provings show them to have very different, preferably opposite, effects.
- This homeopath selects eleven homeopath collaborators.
- A researcher, using techniques determined by the homeopath, distributes the pillules of each remedy into a dozen separate identical new vials.
- A placebo (physically identical "inert" pillules) are distributed into another dozen identical new vials.
- The vials are individually randomly labelled by the researcher with identification numbers.
- The researcher records, for each ID number, whether it holds Remedy #1, Remedy #2, or Placebo.
- The vials are randomly grouped into threes, each group containing one vial each of Remedy #1, Remedy #2, Placebo.
- The homeopath collects a package containing the vials (no contact with the researcher).
- The homeopath distributes the groups of vials to his/her homeopath collaborators.
- Each homeopath, conducts "provings" of the contents of each vial.
- The homeopaths use the results of the provings to identify which vials hold the placebo and which vials hold which of the two known remedies.
- The homeopath's identifications are compared with the researcher's records.
(Yes, I know that there are more holes in this than in a decent roquefort, but if homeopaths can't distinguish between "remedies" with this....)