", "The Establishment"). Unlike the first three "filtering" mechanisms — which are derived from analysis of market mechanisms — flak is characterized by concerted and intentional efforts to manage public information . Flak from the powerful can be either direct or indirect. The direct could include the following hypothetical scenarios: Letters or phone calls from the White House to Dan Rather or William Paley Inqueries from the FCC to major television networks requesting documents used to plan and assemble a program Messages from irate executives representing advertising agencies or corporate sponsors to media officials threatening retaliation if not granted on-air reply time. The powerful can also work on the media indirectly by: Complaints delivered en masse to their own constituencies (e. g. , stockholders, employees) about media bias, Generation of mass advertising that does the same, By funding watchdog groups or think tanks engineered to expose and attack deviations in media coverage that endanger vital elite interests. 2005 America Model Next Top Who Won By funding political campaigns that elect politicians who will be more willing to curb any such media deviations. Anti-Ideologies; substitutes for anti-communism A final filter is anti-ideology. "

" We discuss some of those here. View instability vs. model stability If constructed correctly, models can enjoy a fair degree of stability (owing to the stability of the domain model), whereas user interface code usually undergoes frequent and sometimes dramatic change (typically because of usability problems, the need to support growing classes of users, or simply the need to keep the application looking "fresh"). Separating the view from the model makes the model more robust, because the developer is less likely to "break" the model while reworking the view. Attempting to stitch these two worlds together in a hand coded method without architecture is very common, and results in the model object being polluted with knowledge of the interface, and vice-versa. This makes the code very inflexible and difficult to maintain. For this reason (among others), many programming shops develop the user interface design early in the process of design, and freeze the interface early. America Next Top Male Model The unfortunate side effect of this is that the domain of the problem often isn't clearly understood by the programmers until late in the implementation process. Thus, just at the time that the developers are finally competent to create a good interface, they are kept from changing it. "