Can't find the study, but it was statistical analysis of results of different wine competition. The result was something that bad wines was always viewed as bad

Can't find the study, but it was statistical analysis of results of different wine competition. The result was something that bad wines was always viewed as bad, but on the good part of spectrum the good wines ranked kind of randomly. So it is more like we know what we do not like, but there is very little agreement on what is considered to be good wine.