Motility
The next frontier of mobility.
The next frontier of economic development is not understanding who moves. It is understanding who can.
For decades, mobility indices have tracked who moves. They are look-back mirrors. They tell us who climbed the ladder in the past.
As AI reshapes the economy at tectonic scale, the ability to walk across a room is meaningless if the floor suddenly turns into a treadmill. Economic mobility will increasingly be shaped not only by access to opportunity, but by adaptive capacity: the ability of individuals, institutions, and ecosystems to navigate rapidly evolving terrain.
Mobility measures movement. Motility measures the capacity to make the movement.
Motility
Motility is the latent, adaptive capacity to move and pivot as systems shift. In an AI-accelerated economy, it functions as a form of capital. Those with high motility convert disruption into opportunity. Those without it experience rising viscosity, the structural friction that makes participation in the new economy increasingly difficult regardless of access or intent.
Motility is the muscle. Viscosity is the gunk. The two together describe whether someone can actually make the move the economy is now demanding.
Three irreducible components
The concept comes from sociologist Vincent Kaufmann. Three components together determine whether someone has the potential to move. They are irreducible: if any one is missing, the potential collapses.
| Component | What it includes |
|---|---|
| Access | The range of options actually available. In the AI economy: compute, capable models, capital, reliable infrastructure. |
| Competence | The skills required to act on those options. In the AI economy, the shift from digital fluency to algorithmic agency, the ability to orchestrate AI systems on your own behalf. |
| Agency | The volitional, identity, motivational layer. Even if the options exist and the skills are there, do I choose to act? Do I see myself as someone who moves with the change, or as someone to whom change happens? |
Kaufmann named this third dimension appropriation. We translate it as Agency because the active framing more accurately captures what individuals and ecosystems must do, and because the original term carries other meanings in contemporary English.
The Adaptive Motility Index
The Adaptive Motility Index (AMI) is the diagnostic instrument we are building to measure latent adaptive capacity and the structural viscosity that suppresses it. It operationalizes Kaufmann's three components for the AI-accelerated economy and adds the structural drag that determines whether motility converts into actual movement.
The structure is multiplicative, not additive. A zero in any component collapses the whole. You cannot substitute access for agency. You cannot substitute competence for the will to act.
This mirrors the United Nations Development Programme's 2010 shift in the Human Development Index, which moved from an additive to a geometric mean specifically to eliminate substitutability between irreducible dimensions. Well-rounded capacity is the only path to a strong score.
Four outcomes, one matrix
Where motility and viscosity meet, four developmental conditions emerge.
| Scenario | Motility | Viscosity | Economic Outcome |
|---|---|---|---|
| Fluid Transformation | High | Low | People and institutions adapt rapidly. Disruption converts into opportunity. High growth, broad equity gains. |
| Brain Drain Most dangerous | High | High | Talent and capacity exist but cannot find purchase locally. The capable migrate out. The region loses its most adaptable citizens, and the loss is invisible until it is irreversible. |
| Protective Stagnation | Low | Low | The system is open but the people inside it lack the capacity to use it. Outsiders displace incumbents. Common where access has improved but Agency has not. |
| Structural Trap | Low | High | Capacity is depleted and the environment is closing. Long-term decline and poverty traps. The most expensive failure mode for development work, because the playbook is conventional and the diagnosis is wrong. |
Development orthodoxy has focused on the low-low quadrant, increasing access to systems that are already fluid. AI is pushing many regions into the high-high quadrant, where the digital potential exists but the local viscosity prevents people from acting on it. The standard playbook will not work there.
The question we should ask ourselves is not who moved, but who has the latent capacity to actually make the movement, understanding who has the internal power to pivot. In other words, who has the motility.