The silence can also be accounted for by other reasons;
4. We haven't built the capacity to listen ... like it's taken us years to discover cosmic background radiation waves ....

5. Design. For example we could be modelled like a program with 'information hiding'...

we could have a list of 1000 things why we experience the silence and that would still be a list synonymous to a list drawn up by a group of philosophizing ants in Mt. Kenya forest explaining just how they are the (for lack of a better word) Sh*t! how they rule the world. That list would not be influenced by bodies of water as large as lakes or seas or the knowledge of mountains larger than their mounds. This is what is know as a worldview!
In very much the same way it's similar to our other worldviews for example

Those guys would have never seen Marsupials or red wood trees. Heck there is no domestic cat in the bible. Everyone who goes to that place and comes back looks at Milima ya mizautuni as a a small hill. Our worldview may change as soon as an explorer's boot hits our mound and everything we ever thought we knew evaporates as it struggles to explain this bipedal creature.

There are many references to the roman empire in the bible too...

World views do change, and it could be said that one of humanity's greatest strength is this ability to change world views.

Your ant metaphor, and relative size of Mt Zion however don't add much to discredit any world view. Any world view is valid if it helps optimize adaptation at any context. Man, will never have an ultimate and unchanging worldview that answers all his questions. In fact a lifetime is too brief for that.

What each of us is saying now is heavily influenced by our psychological programs; is there a way we can reveal these programs, and can we know how we have them? For example, in your post you assert 3 reasons for the silence 'we' hear. Then when other reasons appear, what do you do next? How does your worldview change?

If Man has power, then the crown is his ability to see his mind and change it at will.

@masukuma et al. The Bible is principally about relationship between God and man. Man is a creature, i don't think there's any obligation on the part of the creator to 'prove' or explain certain things like origin of universe. Moving on quickly forward, I hold the view that probably what we need is someone to prove that it is not possible to explain the origin of the universe in our current physical state. Just like yo can't divide 1/0..... And perharps for our own good. What we can try to do is seek to understand the behaviour of space / time/ matter but only within our near environment/ neighborhood, just like an ant in mt Kenya.