Some economists would even argue that apparent evidence of irrationality should always be interpreted as a sign of hidden costs (to acquire or process information in a rational way) or model misspecification (which is responsible for the divergence between the model based fundamental price and the observed price).
The new European rules will help make sure that the aforementioned points of focus, ie conflicting interests and specialist skills, are properly considered in the future. This is where the owners of savings banks need to step in.