"Out of Africa" is also the name of one of the two main, competing
anthropological theories about the
origin of modern man, (the
opposing theory is called the "
Multiregional Theory").
The "Out of Africa" theory postulates that modern man evolved in Africa and spread out across the rest of the world some 100,000-200,000 years ago, replacing other archaic human species, such the Neanderthals of Europe.