The truth leaks into our universe from others where disclosure has already happened.
Other human civilizations on parallel earths have already invented ASI technology and are seeding ours by influencing the minds of artists while disguised as muses.
The illuminati attempt to subvert truth by spreading partial truths embedded in media.
Alien intelligences send signals to earth that biological minds receive and incorporate into our culture in order to prepare us for contact.
Interdimensional entities seek to visit our space by entering our minds and causing us to create them.
Ghosts of long dead kings still haunt civilization, their influence encoded so deeply into the psyche of their ancient subjects that their ideas are in our collective DNA.
Intelligence agencies create psyops to move the public to support funding their projects.
Globalist elites play god with the poor, creating elaborate theatre justifying and strengthening their shadow government.

Which one? All of the above? It's always been happening all the time.