Luke's Working Notes

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Argument

Definition

Argument

/ˈärɡyəmənt/

ʟᴏɢɪᴄᴀʟ

: a series of propositions (the premises) intended to determine the degree of truth of another statement (the conclusion)"

// inductive, deductive, abductive, analogy

Summary

Arguments use evidence and claims to make conclusions. Most arguments involve probability, not certainty. They provide clues, not irrefutable proof.

Outline of Topics

On the anatomy of an argument

On probability and certainty

On transferring argument structures to other people through communication

On identifying premises and conclusions

On evaluating arguments

On good explanations

Examples

Deductive argument: All men are mortal. Socrates is a man. Therefore, Socrates is mortal.

Inductive argument: 90% of humans have ten fingers. Therefore, it is likely that the next human you meet will have ten fingers.

Abductive argument: The grass is wet. Therefore, it probably rained recently.

Analogical argument: Cats have fur, are carnivorous, and are good hunters. Therefore, tigers, which share these traits, are also good hunters.

Cross-References

Argument structures are incredibly difficult to transfer to other people, which suggests that they are more Context-dependent than we think. *

References

Socratic Logic: A Logic Text Using Socratic Method, Platonic Questions, and Aristotelian Principles

Summa Theologica - Thomas Aquinas