The reviewers, who call provings one of homeopathy's "pillars," concluded that, "The central question of whether homeopathic medicines in high dilutions can provoke effects in healthy volunteers has not yet been definitively answered because of methodological weaknesses of the reports." In other words despite more than 200 years of supposed testing the homeopathic community has failed to validate its basic method of remedy selection. The reviewers call for better designed provings to provide "results that can be trusted". (Dantas F. et al Homeopathy 96:4-16 2007)