There are at least four theories of truth that are relevant for philosophers of science theory: 1) Theory of Correspondence, particulary, in the way it was proposed by A. Tarski; 2) Theory of Coherence; 3) Pragmatic Theory; and 4) Theory of the Truth Elimination (or definibility of truth). In this expositor article, it is presented a general aspect of some technical developments that have been done recently about the Pragmatic Truth, which is also called " Quasi-Truth".
