That "Slovakian" outlier is not an outlier but is not a Slovak to begin with. Very likely a *** given the place it clusters at and should have never been included as a "Slovak" this is a major concern and the fact that none of the people who cite this study have brought it up or questioned shows that their focus is likely on Western Europe. Indeed many of them can likely not find Slovakia, Serbia or many other of the smaller EE countries on a map to begin with.

If a subject claims certain ancestry, then the subject is treated as such even if the subject does not have the ancestry he or she claims. The subject becomes an outlier if he or she does not cluster with the rest of the population for one reason or the other which is mentioned in supplementary notes.

There is no 'likely' about researchers focusing on western Europe in the context. The aim of studies are summarised in abstracts and discussed in the bodies of articles. The aim of the study I posted is on genetics of Lusatian Sorbs. Three or four outliers or the entire distant country will not affect the results of study on Lusatian Sorbs, if outliers are removed from samples provided by POPRES and HDGP projects. However, the removal of the outliers will cause inconsistencies if one researcher decides to remove the outliers, while other researchers decide to keep them. The outliers only affect an average Joe seeing them on the plot bringing negative or positive emotions in him.

By this logic a Slovakian who clusters with Africans should be considered an "outlier" right?? When its obvious they are not a Slovak.

Yes! Measurement errors are also considered as outliers.

Polako and dodecad have both been cited in peer reviewed journals and Macdonald who ironically is the worst of the three is actually a professor of genetics at an American university. None of them have found Serbs to cluster with Greeks, nor have they found an ethnic Slovak to cluster with ***s/ south Italians. This is some very basic common sense that the individual in question is not an ethnic Slovakian outlier but rather is not a Slovak to begin with. Furthermore when making a map of the ethnicities of Europe it makes sense to include only people who have 4 grandparents from that country as is the approach of dodecad and Polako.

Post discussions and results done by Polako and MacDonald providing the references keeping in mind that the topic is on Autosomal DNA in Slavic populations.  This topic is to compile literature on Autosomal DNA in Slavic populations.

The lack of basic knowledge about geography and what concretely encompasses the ambiguous "Yugoslavia" in this map still remains unanswered, regardless of how many times this map has been cited.

It has nothing to do with hundreds of researchers lacking basic knowledge of geography.