Maybe one day in the far distant future, humankind will develop other senses that reveal those dimensions to us.
I completely believe there is more around us that we do not currently see. Words are memories- this is why you do not have memories of anything prior to when you began putting words with objects. Once someone "names" it- after they themselves finally see it, we are in for such an awakening...
That's so true. Most child psychologists nowadays (Jean Gebser, Jean Houston, others) tell us that, to an infant, the world (universe) is just one amorphous mass – of which s/he is a part, meaning there is no sense of separation between the world and the self. After a bit of time, the infant learns about Mom and Dad and milk bottle and pillow, etc, and the separation sets in ... along with knowledge.
That knowledge is essential for personal growth and to be able to function in society. As for that sense of separation, it might not be ideal.
Food for thought.
It might not be ideal... ah... yes. Then one searches for the ability to feel "at one" with everything again, for the rest of their existence...