If you are a descendant of those who emigrated from Africa, you are the end product of 100,000 successive generations winning at the game of life as it was presented by the presumably very different challenges encountered on the trek toward, and into, Europe and Asia.

For those who remained in Africa, the challenge for each group was to prevail in battle against other nearby groups competing for limited resources such as game and potable water in an intergenerationally familiar and unchanging local environment with tropical weather. For those who emigrated from Africa, the challenge for each group was to prevail in battle against other nearby groups competing for limited resources in unfamiliar and changing enviornments, including cold and barren winters, encountered on the trek into Europe and Asia.