Timeline

A **timeline** (as defined by the Bureau of Time and Space Preservation) is a "distinct set of events, people, and traits unique to one version of Remnant." The Coalescence is named as such because it is a collection of many timelines, making it a sort of "super-timeline" anomaly.

All timelines are thought to stem in some way from an original timeline, which has not been observed directly but has been mathematically proved to exist by scientists in the Ephemera. It is known as the **Prime Timeline** or simply **PT-X.**

There are three types of timelines: **Dominant,** **Subordinate,** and **Co-Dependent.** Dominant timelines are considered to be "parent" timelines with a very small Deviation Value (<15) from the Prime Timeline; Subordinate timelines are timelines that are iterative "children" of a Dominant timeline; Co-Dependent timelines can be either Dominant or Subordinate, but are mutually dependent on the existence of another timeline to maintain stability.

Coalescences are not considered to be timelines, save for the Ephemera.

## Facts

Each timeline is defined by characteristics known as **Facts,** which are classified according to two designations: *nature* and *scope.*

The two natures of Facts are:

* **Static Facts,** or Facts that cannot be reasonably changed through normal means, making them temporally safe to interact with. These include laws of physics, physical geography, past history (relative to time at measurement), and the like.
* **Dynamic Facts,** with which greater care must be taken to not make alterations. These include significant historical events, people's lives, and so on.

The three possible scopes of Facts are:

* **Universal,** meaning the Fact applies only to one timeline.
* **Multiversal,** meaning the Fact applies to two or more timelines.
* **Macroversal,** meaning the Fact applies to every known timeline.
	+ The only known Macroversal Facts are the existence of Remnant itself, its creation by the Gods, and the existence of Ruby Rose.

## Classification

Timelines are often named and categorized to make research and archival of events, persons, and other significant information easier; while means of classifying timelines by their spatial and temporal coordinate matrices do exist, for the purposes of most, a timeline follows the format *AA-X*, where *AA* represent a two-letter classification of the dominant timeline (typically based on its common name) and *-X* represents the number of deviations away from that dominant timeline, with any timelines bearing the -X designation being the dominant timeline themselves.

For example, the Salem's Return timeline is designated SR-X, and its unnamed subordinate timeline (the homeworld of SSRF) is designated SR-1.

Timelines are also categorized by their **Deviation Value (DV)**, which expresses how many deviations from the Prime Timeline it resides at in fifth-dimensional space. Typically, most timelines that have been integrated into the Coalescence have a DV of at least 6, with a few notable exceptions being under this value.

The greater a timeline's DV, the less stable and more prone to paradoxes and anomalies it is, making it increasingly dangerous to interact with. It is conventionally considered unsafe to travel to timelines with a DV greater than 33; timelines with a DV of 60 or greater are considered unsafe to interact with by any means.

The highest-known Deviation Value reached by any timeline is 1042, being the DV of the home timeline of Lieri Branwen, RG-931. It is theorized that her existence itself is the only thing that maintains RG-931's Concept.

## Notable Timelines

This is a list of the most notable Timelines. For a more complete list, see Timelines. For more minor timelines, see Timelines (Other).