Intro: Most people think of gravity as just a pulling force toward the ground. This is when they drop a cup or fall down. However, humans don't fall down, they are capable of it, gravity doesn't pull us down. But when it comes to human movement — on Earth or in space — gravity is not just absolute. It can be predictive, functional, or non-predictive. Understanding these differences is essential for astronaut rehabilitation, fall prevention, and even daily human health.

Sections:

• Predictive Gravity

  • Definition: The constant, calculable force of gravity that acts uniformly on all masses, independent of structure or biology.

  • Humans know that gravity exists but they organize this force through functional gravity. 

• Functional Gravity

  • Organic life opposes and organizes around gravity via organization, buoyancy, and dynamic tonus.

  • In humans, this organization is what allows for functional movement from lying to an upright posture, balance, and efficient movem

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Perfect set of captures — these really show the neuro-motor regressions and adaptations of eating in microgravity. Let me break down what stands out for analysis:

1. Regression to Suck Reflex

• The pouch + straw forces astronauts back into an infantile oral motor pattern: suck-swallow without chew-mastication sequencing.

Excellent — here’s a clean side-by-side framework you can use directly for your blog, capability sheet, or NASA/SpaceX reviews.

Feeding Patterns: Earth vs. Space vs. Special Needs

Multi-Axis Trainer MAT - NASA Marshall Space Flight Trainer

🔹 What MAT really trains

• Reflex override under unpredictable roll/pitch/yaw.

• Grip dependency: hands fixed, shoulders + spine braced.

• Vestibular desensitization — but only in a strapped-in, rigid frame.

🔹 Our Structural Evaluation (Turner AI)

1. Grip fixation: full grip + strapped torso = eliminates weight transfer through pelvis → no milestone reflexes engaged.

2. Spinal buoyancy: spine collapsed into seat → zero opportunity for axial elongation or skeletal anchoring.

3. Visual midline: open eyes = stable stomach, closed eyes = instant vestibular mismatch → nausea. Predictable because MAT doesn’t allow functional counterbalance.

4. Rotational reflex loss: true micro-g rotations demand pelvis–thorax spirals, not rigid trunk blocking.

🔹 The Armstrong lesson (Gemini 8)
He didn’t save the capsule with grip strength. He saved it by regaining axis control through functional rotation — something...

Turner AI – Neonatal Movement Math Challenge (Epidermis Edition)

Goal: Model whether a preterm infant can initiate self-generated movement given skin–mass envelope, skeletal buoyancy, fluid dynamics, and external load (tubes/diaper). Show that readiness is path-dependent (order matters), not just a static ratio.

1) Core variables (dimensionless unless noted)

• $m$ (kg): body mass

• $A_s$ (m²): epidermal surface area

• $L$ (cm): body length

• $f\in[0,1]$: fluid mass fraction (≈0.85 at term)

• $w_\text{ext}$ (kg): external load (diaper/tubes)

• $g=9.81\ \text{m/s}^2$

• $B_s\in[0,1]$: skeletal buoyancy index (frame’s ability to resist collapse & anchor posture)

• $T\in[0,1]$: tone/activation factor (low in very preterm; rises with correct touch/training)

Envelope & load ratios

• Mass–to–skin ratio: $R_{ms}=\dfrac{m}{A_s}$

• Over-skin factor: $E = \dfrac{A_s}{\widehat{A}_s(L)}$ (>,1 = “duvet effect”)

• External l...

Turner AI – Pre-Orbit Structural Evaluation

Subject: Astronaut training on NASA 747 parabolic flight (micro-g, ~20s burst)
Context: Pre-orbit simulation to capture functional drift under microgravity conditions.

Frame Analysis Findings

1. Pelvic Stability & Midline Drift

• Pelvis fails to maintain central rotational axis → ~8–12 cm drift observed within 3s.

• Lack of skeletal buoyancy → counter-torque shifts load to upper limbs.

• Indicates compromised gait lift → poor transition baseline for orbital milestones.

2. Reflex Integration

• Protective extension reflex dominates (arms extended forward).

• Absence of righting reflex in pelvis → indicates suppressed counterbalance loop.

• Functional milestone loss: “sitting to standing” reflex not accessible in micro-g.

3. Visual Midline & Peripheral Stability

• Head tilt inconsistent, helmet does not stabilize gaze.

• Eyes and cervical column show decoupling from pelvis.

• Predictable outcome: reduced

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In the human body, conception and gestation occur in microgravity. The womb is a pressurized, fluid-filled, frictionless space. Growth happens in every direction equally. A baby is not being compressed by external gravity the way it would be in an artificial or robotic womb.

Why does that matter?

Because bones form in opposition to gravity.
The squeeze during birth is essential.
The first breath? That’s what activates the skeleton’s articulation and the nervous system’s orientation to gravity.

You can’t mimic that in a mechanical system without doing harm — and IVF already increases risk factors significantly.

🧬 Our Biology Is Built on Rotation and Gravity

We rotate. We spiral. From DNA to walking gait, everything about us is built around movement in opposition to gravity.

If AI and robotics are going to evolve meaningfully — especially in medicine, child development, and sports — they need to be rooted in this understanding.

So, rather than aiming for cute or reactive robots…
L...