Why don't we still know hyperspace and Theory Of Everything...? WE DO! Just most folks have apparantly almost given up recovering that suppressed data.
It's just that apparantly for thousands perhaps millions of years, man has been a "fallen race".
In order to cope with the lower-dimension ways of "fallen man"; we (under duress), by the billion, fall into the deathtrap of our ancestors.
Look at the history of mankind; it is common for vast numbers of humans to believe in mistaken ideas (like false gods). History of man is evidence enough of the large scale on which humans fall into error when raised on a diet of coercion and ignorance.
Billions of humans were once babies; every one of them knew hyperspace intimately. But they apparantly mostly all fall into the same trap. I have discovered some of what is really going on. It turns out that "Love 'Existence' (Being)(God), Love your neighbour (let them be)- those two commands of Jesus Christ provide a gateway to make it easier for humans collectively to discover and escape the trap.
It's not a case of "figuring out"; why do you think Jesus Christ said (of himself) "I am the way, the Truth, The Life". There is a strong parallel between His Creation-friendly nature and the nature of newborn infants. That's the kind of being we really are; I found that higher-dimension-space awareness, or whatever it is, appears tied up with this too.
If I was making things up, I would hardly do my credibility much good in suggesting humans might not only have natural telepathy, but natural teleportation ability. But I just give the eyewitness data, if it's amazing then so be it.