Postmodernists reject metanarratives because they reject the concept of truth that metanarratives presuppose. That answer would just presuppose additional contingent beings. The teneleven "bodhisattva" precepts presuppose the five precepts, and are partly based on them. Arguments for and against the existence of God presuppose such an understanding of God. To 'mean' anything, a signifier must presuppose a signified already-always outside it. Objection (2) seems to presuppose the ability to will a belief. But a theory of gravitation has to explain those laws and must not presuppose them. These types of triggers presuppose the existence of a previous state of affairs. They also do not presuppose knowledge of contingent facts, or describe the real world. It tends to presuppose a positive answer. Some ideas presuppose that change is a reality. Dialogic relations presuppose a language, but they do not reside within the system of language. That is, it can presuppose that technology has independent effects on society at large. The teaching of it does not presuppose literacy in the mother tongue.