Comparative effectiveness sounds good in theory.

FORBES

Moreover, many governments that provide medical care for their citizens (including America, if Barack Obama's health proposals become law) are beginning to demand that drugs firms prove the effectiveness of expensive new pills in practice as well as in theory.

ECONOMIST: Pills get smart

Even in the absence of plausible theory (or just common sense), rigorous clinical testing could provide evidence of homeopathy's effectiveness, but the data suggest otherwise.

FORBES: Homeopathic Medicine Is Homeo-Pathetic