4B RL as Cognitive, but Meaningless Flashcards
What is logical positivism?
• The philosophically-driven, systematic reduction of all knowledge to basic scientific and logical formulations
How did the Vienna Circle define logical positivism?
• “It is the method of logical analysis that essentially distinguishes recent empiricism and positivism from the earlier version that more biolgical-psychological in its orientation.”
Who was the leader of the Vienna Circle?
• Moritz Schlick
Who was a notable member of the Vienna Circle?
• Ludwig Wittgenstein
What are the only two forms of knowledge considered to be valid?
- Logical reasoning
* Empirical evidence
What are the four forms of statements that are meaningful according to their relationship with logical reasoning and empirical evidence?
- Tautological
- Mathematical
- Synthetic
- Analytic
Who first distinguished between analytic and synthetic language?
• Kant
What is an analytic statement?
- One that is true by definition.
- If the negation of a statement results in a contradiction or inconsistency, then the original statement must be an analytic truth.
- Examples: bachelors are unmarried; daisies are flowers
What is a synthetic statement?
- One whose truth value can only be determined by relying on observation and experience.
- Its truth value cannot be determined by relying solely upon logic or examining the meaning of the words involved.
- Examples: all men are arrogant; the president is dishonest.
What is the principle of verification?
- The doctrine that a proposition is only cognitively meaningful if it can be definitively and conclusively determined to be either true or false
- Developed by Ayer
Give an introduction to A. J. Ayer’s work related to logical positivism.
- He developed the work of the Vienna Circle’s logical positivists, but retained the clear link to their agenda of knowledge being confined to logical reasoning and empirical evidence
- Described metaphysicians as “devoted to the production of nonsense” (although, ironically, we now consider Emotivism to be a meta-ethical approach)
What was the clear limitation to the Verification Principle that Ayer recognised?
• The initial criteria for the VP did not take into account historical or universal scientific statements
• “there remain a number of significant propositions […] which we could not verify even if we chose; simply because we lack the practical means of placing ourselves in the situation where the relevant observations could be made”
• “until he makes us understand how the proposition that he wishes to express would be verified, he fails to communicate anything to us.”
∴ Drew “a distinction between the ‘strong’ and the ‘weak’ sense of the term ‘verifiable’”
Explain Ayer’s ‘strong’ and ‘weak’ verifiability.
- Strong (practical) = “if its truth could be conclusively established in experience”
- Weak (principal) = “if it is possible for experience to render it possible”
Elaborate on ‘weak’ verifiability.
- Statement = “There are no mountains on the farther side of the moon!”
- “No rocket has yet been invented which would enable me to go and look at the farther side of the moon.”
- I am “unable to decide […] by actual observation”
- “But I do know what observations would decide it for me” ∴ “verifiable in principle”
Who championed the falsification principle?
• Karl Popper