" Thus, according to this reasoning, news items that most endanger the corporate financial interests that own the media will face the most bias and censorship. The authors claim that the importance of ownership filter is the fact that corporations are subject to shareholder control in the context of a profit-oriented market economy . The theory then argues that maximizing profit means sacrificing news objectivity, and news sources that ultimately survive must be fundamentally biased, with regard to news in which they have a conflict of interest. Funding The authors also argue that the mainstream media depends heavily on advertising revenues to survive. A newspaper like the New York Times, for example, derives 75% of its revenues from advertisements. The authors suggest that this filter is best seen by adopting a traditional business framework. They argue that a newspaper, like any other company, has a product which it offers to its audience (or customer base). Model Boat Building In this case, however, the product is composed of the affluent readers who buy the newspaper — who also comprise the educated decision-making sector of the population — while the audience includes the businesses that pay to advertise their goods. According to this "filter", the news itself is nothing more than "filler" to get privileged readers to see the advertisements which makes up the real content, and will thus take whatever form is most conducive to attracting educated decision-makers. "

" For an investigator I it makes only sense to consider an entity M as a substitute of an entity O, if I can (1) establish an analogy, similarity, or similar relation between M and O that permits the substitution of O by M with respect to purpose and means, time-horizon etc. , and (2) I can actually investigate M in the required way. That implies firstly that M does not have the properties of O that prevent I from investigating O. Also other properties of O may not be properties of M. In that sense a model is more abstract than its original. Secondly, a model M will in general have properties that O does not have and that actually aid I in investigating M. What the investigator I does in modeling is formulating a problem P in terms of the original O, translate that problem into a problem P' in terms of M, obtain a solution S' of P' and translate S' into a solution candidate S of P in terms of O. Wood Model Boat Kit If S is actually a solution of P then the modeling process was successful and can be terminated. If, however, that is not the case then the investigator I can start over with a different problem, model, means of investigation, or relation between model and original. "