The US economy has once again outperformed expectations, posting a 3.1% annualised growth rate in the second quarter, a figure that has prompted a delegation from His Majesty’s Treasury to study the so-called Anglo-Saxon economic model. For a scientific correspondent accustomed to tracking the steady rise of atmospheric CO2, the parallels between economic and climate systems are instructive. Both are complex, non-linear, and subject to feedback loops. The question is whether this growth is a sustainable equilibrium or a short-term perturbation masking deeper instabilities.
The resilience of the US economy is undeniable. Employment remains robust, consumer spending is buoyant, and corporate profits are high. Yet, like a glacier advancing faster than its melt rate, the underlying dynamics may harbour contradictions. The British Treasury team, led by Chief Economist Dr. Alistair Finch, will examine three pillars: labour market flexibility, deregulation, and fiscal stimulus. These are the ‘forcing factors’ in the economic system, analogous to greenhouse gas emissions in the climate. But, as with climate, the response lags behind the forcing.
Consider the labour market. The US has a lower unemployment rate than the UK, 3.7% versus 4.2%, but the quality of employment is diverging. The ‘gig economy’ and low-wage service jobs have absorbed many workers, yet productivity growth remains tepid. In climate terms, this is like a temperature spike driven by a temporary reduction in aerosols, not a fundamental shift in the energy balance. The UK’s more rigid labour market may sacrifice some growth but provides greater stability. Which is more resilient over a decade?
Deregulation is another factor. The US has rolled back environmental and financial rules, reducing compliance costs. This has boosted short-term output, similar to how burning coal provides cheap energy but loads the atmosphere with carbon. The long-term costs are deferred. The UK, post-Brexit, has pursued its own deregulatory agenda, but with a different calculus. The Treasury’s study will need to account for these externalities.
Fiscal stimulus is the third pillar. The US government ran a deficit of 6% of GDP in 2023, injecting liquidity into the economy. This is akin to a sudden release of methane from permafrost, a pulse that warms the system but is not sustainable. The UK, constrained by its own fiscal rules, has less room for such stimulus. Yet, both countries face the same long-term challenge: an ageing population and rising public debt.
The Anglo-Saxon model is often contrasted with the European social model, but this binary misses the nuance. The real challenge is to reconcile growth with stability, much as we must reconcile energy use with climate goals. The British Treasury delegation arrives as the planet records its hottest month on record. The irony is not lost. The same economic system that drives growth also drives emissions. The question is whether the growth can be decoupled from carbon.
Dr. Finch’s team will release their findings in October. I suspect they will conclude that the US model is not a template for the UK, but a case study in the trade-offs inherent in complex systems. Resilience is not about maximising growth, but about maintaining function under stress. The US economy may be growing, but like a coral reef bleaching under heat stress, its biodiversity of industries and social safety nets is eroding. The Treasury would do well to consider that the most resilient systems are not those that grow fastest, but those that can adapt to change.
For now, the data is clear: the US economy is outrunning expectations. But in a world of finite resources and a changing climate, the race is not a sprint. It is a marathon, and the finish line is a liveable planet.
