Taylor's chapter on monetary policy addresses something that every builder in Nigeria understands viscerally but may not have a full analytical framework for: the cost of monetary instability. When inflation is high and unpredictable, it is impossible to plan long-term investments. Contracts written in current naira become meaningless in three years. Savings in local currency lose real value faster than interest rates compensate. The incentive shifts from building long-term value to protecting existing value through foreign currency or physical assets. Taylor argues that predictable, low inflation is not a luxury for wealthy economies — it is a prerequisite for sustained economic growth, because it makes long-term planning rational. An economy with monetary instability cannot easily build the long-horizon institutions and businesses that sustained development requires.