More devastation of such genetic studies is caused by the fact that communities of people get categorized as 'races'. A good example is the recent work of Witzel, a Harvard academic who tries to trace mythologies from the days of the continental drift which resulted in the identification of a mythical entity called 'Laurasia'. This is called by a variety of names such as 'Gondwana' or 'Atlantis' or 'Lost Continent' or 'Kumari-k-kandam'. There is, of course, the famous narrative of the super-eruption of Krakatoa. In the Dravidian political parlance, a dravidian race is imagined as traceable to this lost continent as the Indian subcontinent started drifting away from the African continent. Continental drift is explained in geological eras running into time-depths of millions of years. Same is the case with genetic mutations with time-depths of tens of thousands of years. This is the clear danger posed by using tools of various disciplines to explain cultural phenomena which provide the core basis for perceived identities of communites in the globe. Straitjacketing the communities into sub-categories as 'ethnic' groups or 'language-speaking' groups or 'local natives' tends to create more divisions among people, thus negating the principal purpose of researches which should be to promote the essential unity and inter-relatedness of the living phenomena, human groups, in particular.