The principle of feedback. There are 4 approaches . In ontological order, the feedback is, for good reason, kept as general element and of evidence domain. Being evidential and being in its evidence non-contradictory, feedback is principled. The feedback principle, or how we name it, the principle Forrester-Stewart, we detach it from Charles J. Stewart’s assertion: „Feedback is emphasized in all forms of communication, but is often indirect or delayed, such as replies to e-mail messages, letters to the editor, applause or questions after a speech is completed, and written reports or evaluations”(Stewart C. J., 2009, p. 189). On the one hand, Jay Forrester appreciates in “Systems principles”, that feedback is constituted  in a principle of systems (Principle 4.2-2) (Forrester J., 1979, p. 132). Professor Laurenţiu Şoitu keep feedback as an “axiom” (Şoitu L., 2001, p. 39).

Concerning evaluation of feedback essence  were differentiate 4 directions: informational orientation, message orientation, phenomenon-process and systemic-structural. Mielu Zlate’s opinion is that „reverse pertaining or feedback” binds the action results „informing that were obtained certain results and not another” (Zlate M., 1994, p. 315). Informational orientation is also professor Sultana Craia: in her appreciation , feedback constitutes „information return (retroinformation)in a communication” (Craia S., 2008, p. 93). To the same informational paradigm it is included the professor Nicolae Rotaru’s position who conceives feedback as autoregulation element of communication „through which are circulated information” (Rotaru N., 2007, p. 10). To message information belong professors Cristian Florin Popescu, Vasile Tran and Irina Stănciugelu. These keep feedback as message (Popescu C. F., 2004, p. 141; Tran V., Stănciugelu I., 2003, p. 19). It is about a “specific message through which emittent receives from receiver a certain answer” (Tran V., Stănciugelu I., 2003, p. 19); this “message” can be a positive one or a negative  one of “encouragement” of communicational behavior in changing performing or stopping of communication. Phenomenon-processual orientation is represented among others, by Gh. Boldur-Lăţescu, Gh. Ciobanu and I. Băncilă, who imagine feedbacks as “processes” and “phenomena” that appear in “complex systems”, with mechanisms of  “autoregulation” (Boldur-Lăţescu, Ciobanu Gh., Băncilă I., 1982, pp. 242-243), also as professor Nicolae Bălaşa who shows that “feedback phenomenon assures the finality of the communicational act” (Bălaşa N., 2005, p. 25). For Jay Forrester, the feedback is “The basically structural element of the systems” (Principle 4.2-2) (1979, p. 132) and constitutes, in the same time, a systemic strategy (Principle 4.4-1) (Forrester J., 1979, p. 142).