A variety of scientific studies of remote viewing have been conducted. Early experiments produced positive results but they had invalidating flaws. None of the more recent experiments have shown positive results when conducted under properly controlled conditions. This lack of successful experiments has led the mainstream scientific community to reject remote viewing, based upon the absence of an evidence base, the lack of a theory which would explain remote viewing, and the lack of experimental techniques which can provide reliably positive results.* Obtained from listing of research papers on Wiseman's website</ref>