 Pharmaceutical research has explored the potential for creating new drugs from traditional remedies, with few successful results.Proponents suggest that research has so far missed key features of the art of TCM, such as unknown interactions between various ingredients and complex interactive biological systems.A "Nature" editorial described TCM as "fraught with pseudoscience", and said that the most obvious reason why it has not delivered many cures is that the majority of its treatments have no logical mechanism of action.