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## Reactions

In fiction, movement over long distances and movement over short distances - which can be dubbed "combat distances" - tend to be remarkably different for different characters, resulting in serious discrepancies when considering their overall speed. On this wiki, we therefore differentiate between various types of speed, including reaction speed.

Reaction speed is defined as a single movement in a defined timeframe, which a character has been shown capable of. A series of movements in similar timeframes makes this combat speed, so this term should only be applied for a single, quick movement. Examples include ducking backwards to dodge bullets and diving away to dodge extremely fast vehicles.

When measured in terms of a single movement of often undefined, small distance, humans have displayed between 300 millisecond (subhuman) to 100 millisecond (peak human) reactions. Autonomous body reactions for humans can also reach as high as 40 milliseconds, but this is oftentimes inapplicable to reaction speed and shouldn't be used.

## Rules Regarding Reaction Speed and Scaling

1. Reaction speed has both a distance and a timeframe component, so all calculations that are completed for reaction speed cannot simply be a timeframe by itself. Do not randomly assume a 1 meter distance for each timeframe and use that speed for the reaction speed.
2. If only a timeframe is known (for example, characters who do not need to move to attack or defend), then it is still possible to list that timeframe in parenthesis in the speed section of the character profile. It may also be listed in the skills section of the profile or as a feat.
3. If character A can blitz character B, A's movement speed may be scaled to B's reaction speed.
4. If character A is considered an equal in combat to character B, then reaction speed may be scaled if there is no discrepancies or showings that suggest the opposite.
5. All other scalings of reaction speed are circumstancial and must be discussed with the staff.

## Reaction Tiers for Reaction Timeframes Only

Normal Human perception: 0.3-0.129 seconds

Athletic Human perception: 0.129-0.102 seconds

Peak Human perception: 0.102-0.08 seconds

Superhuman perception: 0.08-0.0291 seconds

Subsonic perception: 0.0291-0.00583 seconds

Subsonic+ perception: 0.00583-0.0032 seconds

Transonic perception: 0.0032-0.00265 seconds

Supersonic perception: 2.65 × 10^-3 - 1.17 × 10^-3 seconds

Supersonic+ perception: 1.17 × 10^-3 - 5.8 × 10^-4 seconds

Hypersonic perception: 5.8 × 10^-4 - 2.94 × 10^-4 seconds

Hypersonic+ perception: 2.94 × 10^-4 - 1.17 × 10^-4 seconds

High Hypersonic perception: 1.17 × 10^-4 - 5.88 × 10^-5 seconds

High Hypersonic+ perception: 5.88 × 10^-5 - 2.94 × 10^-5 seconds

Massively Hypersonic perception: 2.94 × 10^-5 - 2.94 × 10^-6 seconds

Massively Hypersonic+ perception: 2.94 × 10^-6 - 3.336 × 10^-7 seconds

Sub-Relativistic perception: 3.336 × 10^-7 - 6.67 × 10^-8 seconds

Sub-Relativistic+ perception: 6.67 × 10^-8 - 3.336 × 10^-8 seconds

Relativistic perception: 3.336 × 10^-8 - 6.67 × 10^-9 seconds

Relativistic+ perception: 6.67 × 10^-9 - 3.336 × 10^-9 seconds

Speed of Light perception: 3.336 × 10^-9 seconds

FTL perception: 3.336 × 10^-9 - 3.336 × 10^-10 seconds

FTL+ perception: 3.336 × 10^-10 - 3.336 × 10^-11 seconds

Massively FTL perception: 3.336 × 10^-11 - 3.336 × 10^-12 seconds

Massively FTL+ perception: anything less than 3.336 × 10^-12 seconds