Stewart rejected the concept of a linear evolution evolutionary legacy. This suggests that the culture of all species will evolve in a straight line through similar stages Stewart argued that cultural evolution may occur several lines (multilinear evolution) and each line will be different. This difference is due to the adaptation to the environment. Technology and social structure is not theft. It can be said that the evolution of this concept. A new concept has been developed from the older theory of evolution.
This concept focuses on the relationship between culture and environment that is magnificent and affect each other inseparably. In an age where technology development is still low. Humans must adapt to the environment. And the environment have the potential to change or modify the environment even more. The influence of the environment began to decline. But style and cultural characteristics. Past experiences and routine Traditions and way of life, and some will remain. And has been passed down from one generation to another.