As noted in Post 9 Fixation vs Regression, our ever-maturing mind system progresses through stages of development. The most notable characteristic of that progression is in the direction of increased complexity.
The mind system perceives and invests in order. Recall that in infancy, there is not even the comprehension of mother as a whole, Post 8 About Psychopathy The infant sees moving things, stick-like appendages (arms) extending towards themselves and being swooped up. Imagine experiencing this and not having a schema to map it. This is the stuff of horror movies, think ‘aliens land.’