The information here comes from a post made by the official account on Hoyolab on 01 November 2024.

“If the truth of the universe is cruel and stale, would you still yearn for the answer to the ultimate question?”
There were scholars who spent their entire lives searching for answers, only for a genius to transcend time and provide the solution.
For that genius — #83 Herta — being a “genius” was merely the starting point. She sought to reach higher dimensions, higher worlds, to surpass omniscience and overlook the Unknowable Domain that even Nous had never fathomed.

Should one compare one's own knowledge to a circle, the greater your knowledge, the larger your circle, and the more unknowns lay outside your circle.
Leaving the Circle of Knowledge and creating new insights from the realm of the unknown is to stride upon the Path of Erudition.^[1]

A concept proposed by a Genius Society member, describing it as a cognitive tipping point that can permanently alter the definition of knowledge.
From the initial discovery of fire, the early questionings of gravity… Each instance where a scholar has stepped beyond the boundaries of the Circle of Knowledge led to a significant impact on the world. In the world of geniuses, these impacts are exceptionally evident.

The domain of knowledge itself is a boundary set by Nous. When scholars expand their knowledge to a certain extent, approaching the edge of the known circle, they may encounter obstacles, as if an invisible hand is preventing them from stepping into the unknown, forming a continuous Unknowable Domain.

Meanwhile, the Knowable Domain is an experimental field created by #4 Polka, where probability and coincidence hold no meaning. Polka believes that chaos and the unknown will lead the universe toward Finality prematurely. To preserve the perfect future model declared by Nous using “Moments,” she relentlessly hunts down geniuses, attempting to limit the growth of universal knowledge and extinguish the possibility of chaos.