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The term Homo sapiens is the scientific nomenclature for the anatomically modern man. This term literally means "thinking man". Modern humans are found all over the world in different regions, and are probably the most successful species in modern times, just like the dinosaurs were some one hundred million years ago. Homo Sapiens are the most common and widespread species of primate or great apes, and the last surviving species of the genus Homo; all others have either become extinct, or have lost their distinct identity. The term “Humans” is also most often used only to Homo Sapiens, and not to all other species in the genus homo which are sometimes referred to as archaic humans. Humans also possess a high level of intelligence and a great deal of cognitive ability and cognitive skills due to a large prefrontal cortex, and this feature, attribute and characteristic (besides other features such as bipedalism and opposing thumbs) have distinguished and differentiated it from other species. These aspects have also allowed humans to dominate the earth and build impressive civilizations that have immense technological clout. Humans are also a polytypic species; there are wide variations among humans inhabiting different parts of the globe, even though the traditional and orthodox classification of humans into “races” may be highly obsolete, and may even be associated with unwanted and unintended consequences, both direct and indirect. However, variations between humans is much less than in other species such as dogs, and any two humans are at least 99.5% genetically similar. Humans are also highly social creatures and tend to form either small or large social and cultural units that are known for their social and cultural bonding. These may be either large or small, and in the words of CH Cooley, be primary or secondary groups that promote we feeling and out feeling, and help humans bond. (Cooley 1909).