It is equivalent to preconditions and postconditions in Hoare logic. Theory of Change defines long-term goals and then maps backward to identify necessary preconditions. Chen called for talks without any preconditions, repudiating the 1992 consensus. It lists four preconditions that must be fulfilled in each case. Differently from the propositional rules, formula 267 states conditions over all its preconditions. Security problems can arise due to incorrect preconditions. The program seeking candidacy must demonstrate that they meet the five preconditions to accreditation. These outcomes act as preconditions to the long-term outcome. One of the necessary preconditions for this maneuver was the tight blockade of the town. The complex processes of dissolution and sedimentation of limestone require specific climatic preconditions. This will often imply the creation of preconditions for learning through awareness raising and empowerment. There was some questioning from the boycotting countries regarding any preconditions. Judgments are, for Kant, the preconditions of any thought. The specifications of these properties and preconditions of requiring them are given below. Rule engines typically support rules, facts, priority (score), mutual exclusion, preconditions, and other functions.