A primary challenge in monetary governance is the Time Inconsistency Problem, developed by economists Finn Kydland and Edward Prescott. This model proves that discretionary policymakers face incentives to deviate from their stated plans, which can undermine long-term program effectiveness. [1, 2, 3]

[Bank Pledges Low Inflation Target] ---> [Markets Anchor Expectations] ---> [Bank Cuts Rates to Boost Growth Short-Term]
                                                                                      |
                                                                                      v
[Loss of Policy Credibility] <--- [Long-Term Inflation Spikes Automatically] <--------+

If a central bank attempts to surprise the market by cutting interest rates to boost employment short-term after promising price stability, economic agents will adjust their expectations upward. Corporations will raise prices and workers will demand higher wages, leading to higher long-term inflation without a permanent increase in employment. To solve this problem, modern states grant structural independence to central banks, replacing discretionary actions with transparent, rule-based frameworks. [1]