DandA Week 2 Logic
- Created by: hollyhez
- Created on: 25-04-17 14:39
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- Week 2: Logic
- A sound argument is one which is both deductively valid and has true premises
- Socrates is a man. All men are mortal. Therefore, Socrates is mortal.
- Inductive Arguments
- Inductive arguments we speak of probability
- All the premises have been taken together in order to support the conclusion
- The strength of an inductive argument comes from the enumeration or accumulation of relevant examples.
- Inductively strong arguments vs Deductively valid arguments.
- Deductively Valid Arguments = truth of premises guarantee truth of conclusion
- Inductively Strong Arguments = truth of premises does not guarantee the truth of the conclusion but the truth of the premises provide good reasons to expect the conclusion to be true rather than false.
- Types of Statements in Arguments
- Descriptive statements (what the facts are): Musical training improves a child general intelligence
- Prescriptive statements (what should be done): Factory farming should be made illegal.
- Evaluative statements (value assumptions/ priorities): Caring for the environment is more important than finding the cheapest form of energy
- A sound argument is one which is both deductively valid and has true premises
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