Interesting. I don’t see any conflict between the idea of collective unconscious and religion, but maybe I’m naive.
In any case, whether you call it collective unconscious or instinct (is there a difference?) almost all people are afraid of either spiders or snakes, or both. Certain symbols are common to multiple unrelated civilizations (of course you could argue coincidence–there are only so many geometric arrangements).
Jerome Brunner wrote about childhood development, and there have been TV documentaries on the subject. One thing was “Cartesian reach”–if you put a cup of milk in front of a baby, he will initially reach his hand directly to it. Then he learns to reach for it by knowing its coordinates–not a direct reach, but a circling motion that ends up at the glass. And if a crawling baby approaches a stairway or something else that falls off dangerously, he will stop–even though he’s never seen such a thing before. Why? How does he know?
Most convincing of all is that I’ve read there was an experiment(s ?) where people were asked to draw an idealized scene. Almost invariably they drew a similar scene–a plain with a few trees, a lake, and a mountain range in the background. The African Savannah. I couldn’t find a link, but I’m sure it’s out there. I don’t think this is far-fetched.
There is also a personal story that I ran across some years ago doing genealogy. There is a present day family with three children. Each child has two given names. I discovered an ancestral family from 18th c. Scotland none of the current family had any knowledge of before. Eerily, the names of the children in that family were almost identical to the modern-day family: 5 of the 6 names were the same as in the 18th c. family. Now yes, it could be coincidence, and yes, the present day family used traditional names, but still…I have to think there was some unconscious “memory” of those names. There was something that made those particular names attractive.
And of course if you turn to animals, it’s just astounding. For example, the game “Concentration” where you have a grid with covered symbols or pictures, and one or two squares are uncovered at a time and you have to match them with their identical twin; or, in another version, they are revealed in order and you have to point to them in the same exact order. For a normal human, this is tough. But watch a chimpanzee do it – 3 minute clip –
and there are many more similar videos out there. And then there are Monarch butterflies who fly to the same little glen in Mexico every fall. Except that the butterfly who leaves, say, New York, in August is not the one who arrives in Mexico. It take them 4-5 generations to arrive. So it’s the great great grandson of the one who left NY who arrives in Mexico. How do they know where they’re going? How do they navigate there? And of course how to they get back? “Collective unconscious” ?
And of course there are a lot of other examples, both for humans and animals. The point is that they seem to know things automatically, without being taught, and the question is how?