Because such changes in perceptions could be counterproductive, concern about triggering them might discourage a central bank from taking action that otherwise could have been appropriate and beneficial for the economy in the near term. Lack of transparency and lack of credibility, in this sense, could reduce the effectiveness of monetary policy in stabilizing the economy against transitory shocks.
As information was strictly controlled, you developed your own sense of curiosity, seeking out everything you wanted to learn, including what the socialist regime did not want to teach you. And because openly speaking your mind was dangerous – something you understood early on – you learned to be judicious, developing a strong sense of self-reliance.