Monetary policy operates with a 12-18 month lag, whereas the inflationary effects of oil shocks are immediate and front-loaded. By the time interest rate changes impact the economy, the initial inflationary pressure from oil has passed, making a policy response ineffective and potentially harmful.

The oil supply shock isn't simultaneous. It's a rolling disruption dictated by shipping times, hitting Asia first due to its reliance on Gulf crude and shorter voyages (10-20 days). Africa, Europe, and finally the U.S. (35-45 days) feel the impact sequentially, buffered differently by regional inventories.

Inflation from a supply disruption, like an oil price spike, will eventually fade. It only becomes persistent and embedded in the economy if governments try to 'help' consumers pay for higher costs with stimulus checks, which increases the broad money supply.

Unlike tariffs, which are passed through business costs and can be partially absorbed, an oil shock immediately impacts consumers at the gas pump. This direct hit means the financial pain is felt faster and more universally by households, leading to a quicker and more pronounced change in spending behavior.

The key variable in the current oil crisis is its duration. Because the supply shock is expected to last for quarters, not just months, the long-term drag on economic activity becomes a greater concern for markets than the initial spike in inflation, changing the calculus for policymakers.

Unlike Western economies facing severe inflationary threats from the Iran oil crisis, China is in a better position. A slight rise in inflation could actually be beneficial for its economy, helping to counteract recent deflationary pressures without alarming its central bank, the PBOC.

Investors often rush to price in the disinflationary outcome of an oil shock (demand destruction). However, the causal chain is fixed: prices rise first, hitting real spending. Only much later does this weaken the labor market enough to reduce overall inflation, a process that can take 9-12 months to play out.

A colonial-era demarcation still defines oil markets. Asia ('East of Suez') relies heavily on Middle Eastern oil and feels disruptions almost immediately. Europe and the Americas ('West of Suez') are more detached, experiencing the crisis with a significant time lag.

Despite holding 65-70 days of crude oil reserves, Asian governments and industries begin rationing energy as soon as supply chains tighten. This preemptive action means the economic pain of a disruption is felt much sooner than official inventory levels would suggest, making the reserves a poor gauge of immediate impact.