In our cosmological framework, a code or language is composed of a finite set of symbols, also known as letters. The letters can be anything, and the code is defined by a set of rules for arranging the symbols in a network. The rules govern how the symbols are networked in a hierarchical fashion, leading to emergent meaning, such as how letters form words, sentences, paragraphs, and so on. The code also has syntactical freedom, which allows for multiple ways of arranging the symbols. In the same way, quantum gravity is considered a language because it fits these definitions.
The universe started with fundamental particles, like quarks and gluons, which self-organized into the early hydrogen universe, where atoms were formed. The rules of quantum mechanics and gravity govern how the symbols are arranged, and have degrees of syntactical freedom that are non-deterministic. The universe has an increasing complexity and direction of time, represented by its self-organization into stars, planets, galaxies, and galaxy clusters. Physical structures hold just as much meaning as abstract concepts do, and the evolution of the universe is reflected in the increasing complexity of the code. Eventually, the code led to the emergence of single-celled organisms, and then complex systems like the human body and consciousness. Every thought and chemical reaction in the body is the result of a vast network of quantum thermodynamic micro-events that are encoded in a genetic architecture.
In this cosmological perspective, everything is believed to be influencing everything else through the entire hierarchical evolutionary structure. A linear time evolution, in which each step causes the next, is easier to grasp as it aligns with our tendency to see the world as classical and local. When retrocausality is allowed, it makes every event part of a feedback loop that can influence events in both directions of time.