Yuri could be the original scientist from zero. Also, let's repeat ourselves in case it helps. In this system1, people mostly live in zero, which consolidates anastral non-planets, e.g. asteroids, rocks, dust (moons are contentious).2
So the shape of zero is familiar and literal. To live inside a natural number (in this system zero is not a natural number) is a sign of elite status, wealth, connection to power. In this system, the odd numbers are considered the natural numbers in everyday use, with multiples of three considered self-evidently preferable. The even numbers are considered a very dark, dangerous occult business, avoided without question in the presence of others, and seen as a sign and omen of something awful.
In this system, when something new happens, it is considered an emergent property of the system, considered as a happening to be the legal property of the system, having been conceived therein. When the same thing happens again, it is socially considered only once happening a third time, at which point it is considered an existence. To happen only twice is considered an anomaly and typically sends people into a panic because historically when things happen in even number of times, you know, people believed it brought about terrible tragedy as punishment. So the number two is seen as uneasy, nervous, ominous limbo between emergence and convergence when it comes to existence, at least in this system.3
Okay, we've talked about numbers, and now we say this: there is Peño (pronounced like the Peño in jalapeño) who lives in the loaf of bread in one. His father, also Peño, founded Jalapeños, basically the Chipotle of this system, but inspired by Nando's, and it caused a sensation, introducing diets that are spicier and spicier to each subsequent generation of consumers.
Our Peño really hates his lot in life and wants to be a panelist4 to reform that institution from within and to restore its original methods of experiment, hypothesis, inquiry, debate, writing, and freedom of the count (allowing all natural numbers to freely occur as opposed to the universally respected social contract that any even number occurs solely in intermediate calculation).
Peño could also be the main character or the most protagonisty, and he could be the one who fails to solve the riddle of the dog (IDK if a character should solve it). The riddle is somewhat as follows.5
The previous image (the latter resolution, not the former draft) shows a consistent presentation of role and identity in the system.6 In the region corresponding to zero, there is no dog. This means that at the beginning of our story, someone lacks a dog. Also at the beginning of our story, there is still a concept hanging over society as a looming image (nothing more) of the sun as God.
Science had, up till every age, only made significant progress on Earth, and the sun came to be both understood yet highly deified. Yuri is the moment the sun becomes finally reckoned with as a scientific object. An idea came to his head: Is it a clock? Obviously, it was a star (and for a time it was extremely not obvious that the sun was the same, to some order of approximation, as other stars). But it was not obvious how much astral behavior was just repeating on a clock because its scale of time at which it repeats is so much longer than human life most of the time.
Only extremely rare and volatile events, like solar flares and magnetic field interaction and gravitational interaction, were ever observable more than once within the collective lifetimes of humanity. And even then, the ability to forecast was effectively zero before Yuri. A part of what Yuri was able to do, although nobody ever found his notebooks or knows what his thought process was, was to model the sun as a clock, not on a clock. What that changed was scientists stopped modeling the sun as an isolated system itself (e.g. treating its ejections as outside itself) and started modeling it as the clock of its surrounding system, thereby treating the course and purpose of solar behavior an unscientific pursuit, because it is really a mechanism conducting the course and behavior of its surrounding life and mentality therein.
In this system, and so far, evidence shows it applies to all systems, the conducting sun is teleologically an engine for the sustenance of life and mentality.
Much like the weather, the roller coaster of solar emission shapes the behavior and evolution of each sun's surrounding life and mentality. I say mentality because Yuri's discoveries led to a revolution in scientific understanding of all mentality and the basic fact that it is strongly driven by solar emission.
Yuri is considered the turning point from the cave to the light, so to speak, because people finally had rational explanations for so many things all click into place at once, including what ideas are physically, what tends to cause them, how much of our inspiration is our own, where inspiration comes from when it's not immediately clear, the reason for the urge to name experiences like brainstorm, why the rate of discovery and new ideas increases during periods of increased solar emission, why destabilizing world events like war and revolution tend to occur every eleven years due to the sun.
During moments of extreme solar emission, all life receives an increase of mental events, including not just animals, but plants and all things interconnected with the overall system. This can have catastrophic effects on entire species and ecosystems in the blink of an eye. On the other hand, this can be a rejuvenating experience for the mind in all creatures, as it basically washes away stale electrical connections and frees up new perspectives and brings exciting new images and ideas to mind.
People experienced it, but after Yuri, people finally had an explanation for it. Some in government had known, but obviously kept it secret and obviously tried to contain the idea once it spread. But ultimately, broader knowledge of the relationship between the sun and mentality led to the widespread acceptance that dangerous insurgencies were now scientifically forecastable and preventable.