Firstly, it's essential to clarify that evolution is not a "lie" but a well-supported scientific theory that explains the diversity of life on Earth. Evolution is supported by an overwhelming body of evidence from various fields, including genetics, paleontology, comparative anatomy, and molecular biology.
Now, let's address the misconception in your question. Evolution is an ongoing and continuous process. It has not stopped since the beginning of human civilization. However, the pace and direction of evolution can vary depending on several factors:
Natural selection: Evolution is driven by natural selection, which favors certain traits that provide a reproductive advantage in specific environments. In modern human societies, there are different selection pressures compared to the past. For instance, some traits that might have been advantageous in ancient environments may not confer the same advantage today.
Mutation and genetic variation: Evolution depends on the existence of genetic variation within populations. Mutations continue to occur in human populations, leading to new genetic variations. While some mutations may be advantageous, others may be neutral or harmful, and their impact on the population depends on natural selection.
Human mobility and gene flow: With increased globalization and interconnectedness, human populations are mixing more than ever before. Gene flow between different populations can limit the differentiation and drive the evolution of distinct human lineages.
Cultural evolution: Human societies have developed complex cultures and technologies that influence survival and reproduction differently from purely biological factors. Cultural evolution can interact with biological evolution and shape the characteristics of human populations.
Short timescale observation: Evolution operates on a long timescale, involving numerous generations. On the timescale of human civilization, significant observable changes in the human species are challenging to perceive.
It's also worth noting that evolution is not a linear progression towards some ultimate goal or "improvement." It is a process of adaptation to changing environments. The traits that become more prevalent in a population are those that increase the likelihood of survival and reproduction under specific circumstances.
In summary, evolution is not a static process, and it has not ceased since the beginning of human civilization. The evidence from multiple scientific disciplines consistently supports the theory of evolution. Scientists continue to study and learn more about the complexities of evolution and the factors that influence it in modern human populations.