Ksenia Leontieva, associate professor of production management at the St. Petersburg State Institute of Film and Television (SPbGIKiT), believes that impact assessment must be closely linked closely tied to the authors and investors’ goals. Because goals can be very individual, evaluation criteria cannot be universal. For example, the impact of films designed to increase the number of volunteers can be measured either by surveying viewers, or by measuring the number of volunteers nationwide before and after the show. In the case of videos about domestic violence or AIDS posted on bloggers’ channels with large audiences, one can measure the expansion of knowledge about the issue (by counting the number of views, likes, reposts, etc.); or, one can also look at the long-term change in disease rate, or support for passing a law. But this is much more complicated, because the society can be influenced by multiple factors at once, and the effect of a single audiovisual work on social indicators cannot be directly extrapolated.