How OHirsi’s (2026) Wheelbarrow Motion Theory Challenges and Advances Lee’s (1966) Push-Pull Model

OVERVIEW

Irregular South-to-North migration has accelerated in recent decades, yet dominant analytical frameworks remain ill-equipped to explain why. Most policy responses treat climate change and state corruption as separate, additive problems — each to be addressed through its own silo of interventions. This brief introduces the Wheelbarrow Motion Theory (WMT), an original framework developed by Adam I. OHirsi (2026) that rejects this separation. The WMT argues that climate change and corruption are structurally interdependent: each driver amplifies the other in a compounding feedback loop, producing displacement pressures and governance failures that no single-variable policy can resolve.

THEORETICAL CONTEXT: BEYOND LEE’S PUSH-PULL MODEL

For six decades, Everett S. Lee’s (1966) push-pull framework has anchored migration scholarship. Lee identified four determinants of migration: origin-side push factors, destination-side pull factors, intervening obstacles, and personal characteristics. The model’s elegance is also its limitation — it treats push factors as discrete, additive, and static conditions present at the moment of a migration decision.

The WMT challenges all three assumptions:

Against additivity: Lee lists push factors independently. OHirsi demonstrates that climate stress and institutional corruption are not parallel variables — they are mutually reinforcing. Environmental degradation erodes state capacity; weakened institutions fail to deliver climate adaptation; that failure deepens environmental crisis. The combined displacement force is compounding, not additive.

Against stasis: Lee treats origin conditions as a snapshot. The WMT models them as a deteriorating system — a feedback loop in active motion, producing progressively more uninhabitable and ungovernable territories over time.

Against external obstacles only: Lee locates intervening obstacles — distance, borders, financial cost — outside the origin. OHirsi identifies a critical internal obstacle: corruption dismantles the formal migration infrastructure from within. Documentation systems collapse, legal channels close, institutional trust evaporates. Irregular migration is therefore not a preference; it is a structural consequence produced at the origin.

“OHirsi’s WMT does not replace Lee — it deepens Lee’s framework, transforming the origin side of his model from a checklist into a system.”

POLICY IMPLICATIONS

The WMT’s compounding logic has direct consequences for how governments, multilateral bodies, and development agencies design interventions:

Single-variable interventions will underperform. Climate adaptation funding deployed into high-corruption environments will be captured, misdirected, or rendered ineffective. Governance reform programs that ignore environmental stress will face populations too destabilized to sustain institutional change. Neither works without the other.

Compound policy responses are required. Effective intervention must simultaneously target the feedback loop — strengthening institutional integrity as a precondition for climate resilience, and advancing climate adaptation as a stabilizer of governance.

Irregular migration must be reframed. If irregularity is a structural outcome — not a choice — then criminalization and deterrence-only approaches are both unjust and ineffective. Policy must address the origin-side conditions that close legal pathways.

Early warning systems need recalibration. Monitoring frameworks should track the interaction between environmental indicators and governance metrics, not each in isolation. Compounding deterioration is detectable before displacement occurs.

FPS’s ROLE

Foresight for Practical Solutions (FPS) is a Mogadishu-based policy institute committed to evidence-grounded, practitioner-informed analysis of governance, climate, and security challenges in the Horn of Africa and the broader Global South. The WMT emerges directly from this institutional mandate — grounded in the realities of states where climate vulnerability and governance fragility are not abstract variables but lived conditions shaping millions of decisions to move, stay, or survive.

FPS advances the WMT as both an analytical framework and a practical policy instrument — one capable of informing migration governance, climate finance architecture, and anti-corruption strategy in an integrated rather than siloed manner.

REFERENCES

OHirsi, A.I. (2026). The Wheelbarrow Motion Theory: Climate Change and Corruption as Interdependent Drivers of Irregular South-To-North Migration – Practical Solutions and Policy Responses. Journal of Population and Sustainability. DOI: 10.3197/whpjps.63887831800458

Lee, E.S. (1966). A Theory of Migration. Demography, 3(1), 47–57.