For humans, is acquisition of “social skills” one of those domains where experience is more important than any kind of bequeathed knowledge?

To be sure, the learning curve for humans is long and tortuous because of the state of innocence and ignorance at the outset of life. There is a higher awareness intuitively. The ability of a person to be in communication with their intuitive apparatus will vary widely and will often fade. When babies are born they are very intuitive and this is a major part of their experience. They sense better with their intuition than other senses because intuition is the most powerful of senses. It brings knowledge, not just information as the other senses do. When you feel something through touch, the mind must interpret the signal to understand what is being felt. This can take time and there can be false conclusions about what is sensed, leading to errors or even dangerous situations. The intuitive knowing happens instantly and can even be complete to the extent it provides everything a person needs to know about a particular circumstance, and it all comes in at once, all of a piece. The problem for the infant is the other parts of the mind and learning are not in place yet to translate the intuitive awareness into any kind of meaningful action. So it is much like giving a broad perspective without the learning to understand where the pieces fit together and what one’s role might be to interact with the broader arena of life. The infant is woefully inadequate to engage with the world in meaningful ways other than calling for its mother and signaling unhappiness about physical discomfort or emotional torment. There is a very limited repertoire of choices for quite some time.