Can you explain this excerpt?

"Within the topic of Philosophy, Ontology is the study of existence and the things that exist, their relations, similarities and differences. This is done through the formal naming and classification of such entities and of their relationships with each other. An ontology consists of a series of axioms (starting points of reasoning), domains (the range of the ontology), definitions, and a grammar that articulates the statements of the ontology.

Whilst the study and development of ontologies dates back to before the Information Age, it was limited by the existence of just one type of sophont (baseline humans). It was not until the emergence of sophont AIs, radical Tweaks* and Provolves** that the field began to grow.

Beginning with the First Federation***, the meaning of 'ontology' expanded to also refer to a class of algorithms which definitively describe the different life perspectives and modes of thought of different types of sophonts. Using these algorithms, it is possible to design social, political, memetic, and cultural structures that allow for the creation of stable, complex, multi-species civilizations extending across light-years of space, even without direct connections via wormholes. For aioid****s, the digital population, or anyone with an exoself***** or DNI******, an ontology is also a software protocol which forms the basic foundation for thinking and discourse, creating a common framework which helps beings of sometimes radically different mental structures and toposophy******* interact.

This use of ontologies takes place on a daily basis in the interactions of multi-clade societies. When a sophont encounters a radically different mind, they can plug in their goal, get out a recommended set of behaviours, and coordinate with an alien stranger without having to go through the massive mental redesign needed to fully understand each other. In the more advanced and cosmopolitan regions of the Civilized Galaxy, delivery of recommended behaviors, as well as empathic and perceptual overlays allowing a sophont to 'walk a kilometer in another beings shoes,' is handled seamlessly via a combination of downloaded skill modules and Knowsense******** feeds, updated constantly and in real time as circumstances may require.

Ontologies can vary hugely from one to another. Ontologies within a specific field of study have a narrower domain than a general ontology, are more practical, and more specialized. Ontologies within an ample field of study have wider domains, are more abstract or theoretical, and tend to have a holistic focus. Ontologies can have a specific way of organizing information, specific routes of action, and different values and attributes among their elements, so philosophies or protocols made with these ontologies may vary not only in their details, but also in their spirit and dynamic.

Due to the differences that can appear between different ontologies depending on where the focus is placed, the Terragens********* developed ontologies (algorithms) to classify other ontologies and translate their meaning, but even these are limited. These are called Upper Level Ontologies and their domain is the elements that compose other ontologies, their relations and definitions. Upper Level ontologies stand on widely accepted axioms and can manage different ontologies as different ways of thinking or different belief systems inside a broader ontology. These ontologies allow sophonts to understand highly divergent realities .

The better the Upper ontology, the more diverse the realities that it can translate to a familiar mode of thought. These modes also affect the way a being following these philosophies will act, so ontologies for the common people are guidelines about how to think and act. The history of mindkind includes the creation of increasingly encompassing ontologies. But with the creation of each ontology, new modes of thought appeared that resisted classification.

Even today is not clear if an all encompassing ontology will be developed in the future, but as Godel's Incompleteness Theorem proves, any well-formulated system can be complete, or consistent, but not both."
* Humans and Human descended life genetically modified to live in an alien environment
** Uplifted animals
*** A failed attempt at creating a unified Human and AI lead interstellar polity during the early Interstellar era.
**** AI software entities
***** An extension of one's consciousness via technological mean
****** Direct Neural Interface
******* the study of expanding mental capacities operating on orders of magnitude beyond baseline human mental capacity
******** An intuitive knowledge interface deeply integrated into the mind of a sophont to the point that it operates in the same way as a sense, but one that provides knowledge rather than images, sounds and so on.
********* All life descended from Earth (i.e Humans, animals, etc)