 A second possible misunderstanding is that dynamic semantics or update semantics is in complete opposition to classical truth conditional semantics (compare the entries on  classical logic  and  first-order model theory).  In fact, as this entry will soon make clear, what dynamic semantics provides is a generalization of truth conditional semantics rather than a radically different alternative. The classical meanings become the preconditions for success of the discourse actions. Dynamic semanticists claim that compositional meanings have the nature of functions or relations and the classical meanings are recoverable from the relational dynamic meanings as projections onto their “input” coordinate.