This is not to deny or downplay the possible presence or importance of such factors; only, it is preferable to shift the study of deviations from the ‘theoretical’ behaviour implied by those conclusions to a later moment and to the detailed plane of complementary observations, rather than cloud all distinctions in a single theoretical construct which, in the attempt to embrace and set on an equal plane the congeries of systematic and accessory factors, would be reduced to a non-theory suitable solely to conclude that all kinds of behaviour are equally possible (for caprice or madness, even, as is in fact the case).
Price stability is the key objective of almost all central banks, which they try to achieve through different monetary policy tools available to them. However, this can only be done indirectly through various transmission mechanisms, which are not only uncertain but also take time to work.