Art Authenticator: To be considered a genuine landscape by the 17th-century master Valerius, a painting must feature his signature technique of layering translucent glazes over a monochrome underpainting. A newly discovered painting of a coastal scene has been thoroughly analyzed by conservators, who found that it was created using exactly this layering technique. Therefore, the coastal scene is undoubtedly a genuine work by Valerius.
Which of the following most accurately describes a flaw in the art authenticator's reasoning?
- AIt confuses a condition that is sufficient to prove a painting is a genuine Valerius with a condition that is required for it to be considered one.
- BIt illicitly shifts the meaning of the term 'genuine' between the premise and the conclusion.
- It treats a condition that is necessary for a painting to be a genuine Valerius as a condition that is sufficient to guarantee its authenticity.Answer
- DIt infers a causal relationship between the use of a specific painting technique and the authenticity of an artwork based solely on an observed correlation.
- EIt concludes that because a specific part of the painting exhibits a certain characteristic, the painting as a whole must possess that same characteristic.
Answer
The argument is flawed because it treats a necessary condition (the specific layering technique) as a sufficient condition for authenticity.
The author states that a genuine Valerius landscape 'must feature' the layering technique. The phrase 'must feature' establishes the technique as a strictly necessary condition. The author then argues that because the new painting features this technique, it must be genuine. This incorrectly treats the technique as a sufficient condition that guarantees authenticity, ignoring the possibility that other 17th-century artists might have used the same glazes and underpainting.
Step-by-Step Solution
Key Concept
Identifying Illegal Reversals (Confusing Necessary and Sufficient Conditions)