There are of course many more procedures for estimating a variety of statistical targets, and there are many more expressions for the quality of the estimation (e.g., bootstrapping, see Efron and Tibshirani 1993). Theories of estimation often come equipped with a rich catalogue of situation-specific criteria for estimators, reflecting the epistemic and pragmatic goals that the estimator helps achieving. However, in itself the estimator functions do not present guidelines for belief and, importantly, confidence intervals do not either. 