Some people may not understand the power of codex so I write an explanation of codex.
1.It's his brain working at a super high level, able to solve problems, plan, and break down complex systems fast.
2.It helps him stay calm under pressure, resist emotional reactions, and focus on long-term strategy.
3.It lets him design more efficient structures, such as aqueducts, forges, and farms, than anyone else in the world.
4.It also tracks his health and energy, helping him adjust when he's tired or stressed kind of like an internal coach.
So it's not like a simple system, it is like a mix of systems