The theory of evolution proposes that living organisms, including human beings, evolve due to mutations that randomly occur in the genes of the living organisms. The mutations (the altered genetic code) are passed on to succeeding generations by biological reproduction. Most of the mutations are so minor as to be of no consequence, but some affect how well succeeding organisms adapt to the environment.
The theory proposes no rhyme or reason, certainly no intelligence agent, guiding the mutations. Mutations simply happen due to random environmental conditions, like the present of cosmic rays, etc. Some mutations are helpful to the next generation; some are harmful. Most, as previously stated, have minimal impact. Whether a mutation is helpful or harmful to the next generation, affects the next generation's ability to survive. If a mutation provides an advantage to the individual, that individual can outperform other members of its species. If the mutation causes a disadvantage, the recipient cannot perform as well as others. As popular saying goes, it really is a question of "survival of the fittest."
The theory of evolution does not propose that any intelligent agent is guiding evolution, not even the organisms own intelligence. Some popular TV documentaries mistakenly suggest that certain organisms realized the benefit of certain evolutionary changes and imply that is why the evolutionary changes happened. But this is not the theory of evolution. The theory holds that there is no intelligence guiding the evolutionary process. It's all random mutations. Christian opponents of this position propose that God is guiding evolution. Since there is no scientific experiment that can demonstrate God's involvement in evolution, there is a big rift between pure evolutionists and Christian evolutionists.
Science, including biology, is only one segment of human knowledge. It is limited to whatever can be demonstrated by experiment. However, there are many segments of human knowledge: philosophy, history, music, and others, that are not limited to demonstration by scientific experimentation.
Every human being has an all-encompassing perception of the real world that person is immersed in. This perception covers all knowledge. People, no matter how poorly educated or inarticulate they are, use this perspective as their primary view of reality. The philosophical name for this perspective is metaphysics. Metaphysics covers more territory than the individual fields of knowledge like science, biology, etc. It covers all knowledge. We all view life through metaphysics. That's why even the most primitive people can view their existence through theological aspects of the spiritual world and their place in the spiritual world as well as their place in what we would call the sciences, like weapon making, cooking, medicine, and their participation in literature, history and all the other segments of knowledge no matter how rudimentary their grasp of details are.
Why am I saying this? It's because I want to take a broadside at evolution from a metaphysical point of view. It's now easy to see how politicized and phony some of the arguments justifying abortion are. It's just as easy to see how the rationale justifying abortion does not support the theory of evolution. This should be a red flag to the scientific community. Scientists have worked for generations trying to develop the theory. It's not right to throw all their work away to justify abortion.
Bear with me for a moment. Abortion supporters would argue that I, the person writing these words, did not come into existence until after the tissue housing me was ejected from my mother's body. Prior to that, my tissue was merely a growth within my mother's body. After ejection, with absolutely no physical or biological change to the tissue, I (the person writing these words) suddenly, instantly, came to be a human being. That conglomeration of non-human tissue within my mother's body, not being human, could never write words. It would have to become a human being first. Obviously, the human being that I am was produced by spontaneous creation.
It is one thing to pursue scientific understanding using the means all scientists agree to use, but it's another thing to cross over into a different field of knowledge. Proponents of evolution would be wise to admit that spiritual considerations are not part of their specialized field of study. When they idly stand by and let proponents of abortion claim that people did not become "human" until after the ejection of their fully-formed body from their mother's body, don't they realize that such a claim destroys the theory of evolution? I, for example, the human being writing these lines obviously did not even evolve from my own mother. How could I have evolved from hominoid apes?