Introduction
Globalisation has reshaped modern economies by deepening interdependence through trade, investment and integrated supply chains. This has delivered substantial efficiency gains, but it has also created a trade-off: the very interconnectedness that raises efficiency also reduces an economy's ability to withstand disruptions without significant cost. Rare but high-impact events such as the COVID-19 pandemic and the Suez Canal blockage have brought this tension into sharp focus.
Greater efficiency due to globalisation
One of the clearest gains stems from specialisation according to comparative advantage, as introduced by David Ricardo. When countries focus on producing goods and services in which they have the lowest opportunity cost, global output increases. Singapore, for instance, can focus on high-end services like logistics and finance while importing food or raw materials from countries with agricultural advantages, allowing it to consume beyond its domestic production possibilities curve (PPC) and improving overall welfare. Globalisation also grants firms access to larger markets, allowing them to produce at higher volumes and lower per-unit costs. Through economies of scale, firms such as Apple or Samsung optimise supply chains and reduce marginal costs, raising productive efficiency, while consumers benefit from cheaper, more diverse products and firms can reinvest profits in research and innovation.
Reduced resilience due to globalisation
Despite these efficiency gains, globalisation makes economies more exposed to external shocks and less able to absorb disruptions. Highly globalised economies, especially small open ones like Singapore, depend heavily on global trade and foreign direct investment, leaving them vulnerable when global demand contracts. During the COVID-19 pandemic, a fall in global income sharply reduced demand for exports such as electronics and travel services. In AD-AS terms this is a leftward shift of aggregate demand (AD), lowering real national income and raising unemployment, a typical negative external shock. Global interdependence also means domestic inflation can be heavily influenced by external cost shocks. In 2021 to 2022, supply disruptions from geopolitical tensions such as the Russia-Ukraine war and transport bottlenecks such as the Suez Canal blockage caused sharp rises in commodity prices. Countries like Singapore, which import almost all their food and energy, experienced imported inflation, shifting the short-run aggregate supply (SRAS) curve leftward, raising the general price level and eroding purchasing power.
Conclusion
In summary, globalisation has delivered significant efficiency gains through comparative advantage, specialisation and economies of scale, but it has also created vulnerabilities by increasing interdependence and exposure to external shocks. The trade-off between efficiency and resilience is a central challenge for modern economies. In an era of rising geopolitical tension, climate risk and pandemic uncertainty, governments may need policies that balance efficiency with the ability to withstand, absorb and recover from disruptions, acknowledging that greater resilience often comes at the cost of efficiency.