Four generations of motion, read in the order the plain met them. Each one removes a constraint the previous generation could not: the first cannot move at all, the second cannot manage uneven ground, the third cannot stay, and the fourth does not need to be told where to go.
Epoch 1
The Servo Muscle
1961–presentServo Muscles, Welding Breath, Assembly Hooves and Yellow Armor
The founding generation, and it never took a step: motion perfected in place. Servo Muscles made a machine’s strength fine enough to assemble something smaller than a hand, Welding Breath let it build rather than merely hold, and Assembly Hooves gave it a repetition that no animal can match. The generation that taught the world what mechanical patience is worth.
Behaviour · Stationary or semi-mobile, hyper-precise and tireless: a body that has no interest in going anywhere, only in being exactly right.
Servo MusclesWelding BreathAssembly HoovesYellow Armor
Epoch 2
The Balancing Body
1992–presentHydraulic Legs, a Stabilizer Tail, Jump Pistons and a Pack Coordination Gland
Motion left the fixture. The Dynamic Balance Organ is the mutation the whole species is descended from: Hydraulic Legs to push, a Stabilizer Tail to correct, Jump Pistons to leap, and a Pack Coordination Gland so several bodies can act as one herd. The stallion could now stand on ground no workshop would have accepted as a floor.
Behaviour · Agile and demonstrative: runs, climbs and recovers from falls that would end any other mechanical body.
Hydraulic LegsStabilizer TailJump PistonsPack Coordination Gland
Epoch 3
The Aerial Eye
2006–presentRotor Wings, a Gimbal Eye, a Sky Mapping Gland and Hover Hooves
Motion left the ground entirely. Rotor Wings let a body hold an altitude rather than a position, the Gimbal Eye stabilised vision against its own motion, the Sky Mapping Gland turned looking into surveying, and Hover Hooves allowed the beast to simply stop mid-air and stay. Balance stopped depending on footing and started depending on seeing.
Behaviour · Aerial, precise and agile: holds the sky as a grid rather than a territory, and revisits it by memory.
Rotor WingsGimbal EyeSky Mapping GlandHover Hooves
Epoch 4
The Autonomous Mind
2013–presentAn Autopilot Eye, a Neural Net Spine, Bipedal Legs, Manipulation Hands and a Task Learning Gland
The youngest generation removes the handler. A Neural Net Spine decides inside the body, an Autopilot Eye reads the road instead of a map, Bipedal Legs and Manipulation Hands let one animal work in a room built for people, and a Task Learning Gland means the work it was taught is not the work it will be doing in a year. This is the generation the plain starts asking questions about.
Behaviour · Road-bound, predictive and adaptive: chooses its own route, and treats a task as something to be learned rather than performed.
Autopilot EyeNeural Net SpineBipedal LegsManipulation HandsTask Learning Gland