Time Lags and Destabilizing Policy Responses. The apprehensions of the Currency School stemed from its belief that the past actions of the Bank of England had been perverse and destabilizing. This destabilization argument stressed the adverse effect of time lags on the Bank's policy response to gold outflows and to exchange rate movements. Specifically, the Currency School argued that long lags existed between changes in the volume of note outstanding and consequent changes in prices and the exchange rate. Owing to these lags, the exchange rate would be slow in registering the effect of note overissue and in signaling the need for a corrective contraction. Guided by the exchange rate indicator, the Bank would continue to expand its specie-displacing note issues long after the appropriate time for contraction.