§1 The Architecture of Visual and Analogical Persuasion

To understand how media influences the “Reasonable Person,” we must look beneath the surface of slogans and images. Philosophically, persuasion in media is built upon two primary pillars: the use of Analogical Reasoning to bridge the known and the unknown, and the deployment of Visual Rhetoric to bypass linguistic logic.

1.1 The Logic of Analogy: Comparisons and Consistency

An Argument by Analogy is a form of inductive reasoning where one claims that because two distinct subjects ($X$ and $Y$) share several known properties ($A, B, C$), they likely share a further property ($P$). In media and public discourse, analogies are not just “metaphors”; they are logical tools used to establish facts or argue for moral consistency.

• Factual Analogies and Scientific Models: As noted by philosophers of science like Mary Hesse, analogies are central to how we build models. For example, comparing the flow of electricity to the flow of water in a pipe is a factual analogy. It helps us predict the behavior of $X$ by looking at our existing knowledge of $Y$.

• Moral Analogies and the Principle of Universalizability: In ethics, analogies are used to ensure we “treat like cases alike.”

  • Peter Singer’s Argument: In Animal Liberation (1975), Singer uses a moral analogy to argue that just as it is wrong to discriminate based on race or gender (which are arbitrary biological traits), it is also wrong to discriminate based on species (Speciesism). If the capacity to suffer is the relevant trait for moral consideration in humans, an analogical argument suggests it must be the same for non-human animals.

• Evaluating Strength: A “Strong” analogy is determined by the ratio of Positive Analogies (shared traits) to Negative Analogies (relevant differences). A “Weak” or Faulty Analogy (Chapter 4) occurs when the differences outweigh the similarities in a way that is relevant to the conclusion.

1.2 The Visual Argument: Is an Image a Proposition?

Traditionally, the “Linguistic Turn” in philosophy (championed by figures like Gottlob Frege) argued that logic only applies to things that can be true or false—namely, sentences. However, modern Argumentation Theory has expanded to include Visual Rhetoric.

• The Visual Enthymeme: In traditional logic, an enthymeme is an argument with a missing premise. J. Anthony Blair argues that most media images function as “Visual Enthymemes.”

  • Example: An advertisement for a rugged SUV doesn’t say “Buying this car makes you adventurous.” Instead, it shows the car on a mountaintop. The viewer provides the missing premise: “Only adventurous people go to mountaintops,” and arrives at the conclusion: “If I buy this car, I will be (or be seen as) adventurous.”

• Denotation vs. Connotation: Roland Barthes and “Myth”

  In his seminal work Mythologies (1957), Roland Barthes distinguished between:

  • Denotation: The literal, “dictionary” meaning of an image (e.g., a photo of a bottle of perfume).

  • Connotation: The cultural and emotional associations (e.g., the perfume bottle connotes “French elegance,” “romance,” or “wealth”).

  • The Rhetorical Maneuver: Media often suppresses the denotation (the actual ingredients or price of the product) to amplify the connotation. By doing so, it creates what Barthes calls a “Myth”—a socially constructed value that feels like a natural, logical truth.

1.3 Strategic Framing and Salience

The way an image or story is “framed” is a visual version of Slanting.

• The Power of Salience: As Robert Entman explains in his research on media framing, to frame is to “select some aspects of a perceived reality and make them more salient” (more noticeable or important).

• The Ethical Risk: By focusing on one “frame,” media can commit a Fallacy of Omission. For example, framing a labor strike solely as a “traffic inconvenience” makes the inconvenience more salient than the underlying labor issues, pre-judging the argument’s conclusion through visual and narrative choice rather than evidence.

§1 Summary Table: The Logic of Comparison and Image