A question for evolution
According to wikipedia, the first modern human in the evolutionary chain, homo sapiens, arose about 250,000 years ago.
The article states that there is very little variation in genetic material between homo sapiens as compared to many other animals. This gives us reason to believe that homo sapiens has changed very little in the last 250,000 years.
According to this article, the first culture sprung up in China about 9,000 years ago and a mere 5,000 years ago the Sumerians invented writing.