Many children believe that the Sun moves about the Earth. The very idea that children have an accurate picture of how physics and nature works is laughable. They don't.
On top of that, you are once again defining morality by what humans think about morality. That is subjective morality. Objective morality would require you to reference something independent of humans.
Subjective moralities can be hardwired. Being hardwired does not make morality objective.
I would say that you clearly don't understand what objective is. Objective means that it is independent of humans. Period. The circumference of the Earth is an objective measure because it is independent of the person making the claim. The circumference of the Earth can be determined independently of all humans. Not so for morality.
If you base morality on what humans think of morality, then it is, by definition, subjective.
Being the products of our genes does not make it objective because it is still dependent on humans.
Firstly, no one in the right mind would think that a 4 month old child has a basic understanding of the principles of science. So don't misrepresent my meaning. Why does a child hesitate when crawling past a ledge, even if there is hard plate of glass for him to crawl onto? Why do babies instinctively dog-paddle when tossed into the water? Why do babies instinctively grasp for an objects when suspended into the air and let go? Why do babies know to move around some objects and not try to go through them? These are all
objective traits/instincts hardwired into each of us through evolution. They are expressed through our sub-consciousness by our genes and alleles. So
NO, babies do not have a conceptual understanding of what quantum entanglement and physics are, or what wave-particle duality and the uncertainty principle are either. But they are
objectively hardwired with enough understanding of "baby" science to navigate successfully through their environment. Hence their hardwired
objective dependence on, and mimicry of adults for guidance.
Let's talk about this subjective and objective perspective that you keep trumpeting ad nauseum. Everything that we think of, experience, or are aware of, is subjective. Ever since we became self-aware, we became trapped within this subjective perspective. Unless you believe we can "mind melt" with others, or see ourselves from outside of ourselves. To have this subjective perspective, we only need to be consciously aware of our existence. The objective perspective couldn't care less if we exist or not. The moon will still exist whether someone is looking at it or not. In this sense the moon can exist outside of our subjective perspective. Right? Therefore the moon does not require our presence, or our awareness of its existence. Right? From the subjective perspective, there is no objective reality. From an objective perspective, there is only subjective perspectives. Our subjective perspective is totally limited by the functioning of our sensory organs.
Since we don't have a "hive consciousness", objective morality can't exist. It will always be subjective.The question now becomes, how did we evolve our moral sense of justice? It is this process that must be
objective, like evolving two arms, legs, or being symmetrical. Nature itself is objectively random. But after billions of years of trial and error(99.9% extinct species), this randomness can appear systematic or having a specific direction. One direction is to increase the organism's chances for survival(as opposed to extinction), by instilling or programming genes that are conducive towards the organism's survival. The expression of these genes are
objectively subjective to the organism. That is, we can't control how they are expressed, but we can be aware of their expression. These genes installed will control our basic instincts and needs(water, hunger, fear, and sex). They will also control our herding and tribal instincts. As our brain evolves, these
objective instincts will become more discernable and refined. We have learned that it was better to cooperate than compete. That it is better not to cause harm to others, than to cause harm.This genetic information governing our subjective behavior, is the result of the inherited traits from thousands of previous generations. Just as our traits are evolving today, so will our concept of morality(movie censorships, levels of violence, religious intolerance).