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Today there is considerable debate about the racial validity of the term Tutsi as distinct from Hutu. Some researchers believe there is no genetic difference between the two supposed groups, and that what difference did exist can be explained by social and procreative patterns within the Great Lakes region. At one time, there may have been economic and cultural differences in the Rwandan population, although this is also disputed. One such difference was occupational. Some people were farmers and ate a varied diet. Others were cattle keepers and had a diet that consisted of mainly dairy and meat products. The so-called "Hutus" were formerly associated with the former characteristics, and the so-called "Tutsis" with the latter characteristics. Since there weren't any blood or cultural differences between the two "groups", it was easy for them to change their supposed identity or to confuse the two. A Hutu could become a Tutsi simply by raising cattle, and a Tutsi could become a Hutu by working in agriculture. In most circumstances, a foreigner (and even native Rwandans and Burundians) cannot tell the difference simply by looking at a Tutsi or Hutu. This view has become popular since the genocide, with the current regime at pains to portray itself as being merely one group within a homogenous population, rather than an ethnic minority dominating an ethnic majority.