I'm sure there is other life out there.. But tooooo far away.. We know there's no life in our Solar system... Any other life? Just too far away to come here.. And vis versa..
Technological achievement tiers assuming such is possible. Cheap renewable non-polluting energy would be a big step.
Tier 3: Space-Faring
Species has efficient
slipspace navigation,
mass drivers,
asynchronous linear-induction weapons,
holocrystal storage and semi-
sentient AI—though their creation requires
memory transfer from the freshly deceased and/or
flash cloning. They have had no outside influence.
For most of the 25th and 26th centuries,
humanity stood at this level. This level is also where the
Lekgolo were before joining the Covenant.
[1]
Tier 2: Interstellar
The species has the ability to perform exceedingly accurate slipspace navigation, near-instantaneous
interstellar communication and man-portable application of energy manipulation. The unified state of the 26th-century
Covenant stood at this level.
[1]
Both
San'Shyuum of the Covenant and
Sangheili brought the other races of the Covenant to such a high technological level when incorporating them into the Covenant. The two primary extant interstellar civilizations were space-faring prior to discovering Forerunner artifacts—or each other—but they have not successfully reverse-engineered those artifacts.
[1]
Tier 1: World Builder
The species has the ability to
manipulate gravitational forces, create
AI with full sentience, fabricate super-dense materials, perform super-accurate slipspace navigation,
the ability to create life, and
the ability to create worlds. The Forerunners are the most prominent civilization to have reached this level. Given their technological sophistication, it is possible that prehistoric San'Shyuum and
prehistoric humans also stood at Tier 1 before
their defeat by the Forerunners.
Tier 0: Transsentient
As the Forerunners had no examples of civilizations with technological accomplishments greater than themselves—with the exception of the
Precursors—this is a theoretical ceiling. It is suspected that they can travel between galaxies and accelerate the evolution of intelligent life.
The state of transsentience is evidently connected less to the level of available technology as understood in the traditional sense and more to a metaphysical elevation of the beings themselves beyond conventional existence.
[8] The Precursors' technology was created through
neural physics; an abstract interplay between thought and the fabric of reality.
[9] The
Flood's
compound mind may also be understood as a form of transsentient being;
[10] indeed, in the later stages of the
Forerunner-Flood war, the Flood was able to tap into neural physics and control Precursor artifacts.
[11]
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