Good argument

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What is a good Argument?

Valid Argument

The distinction between valid or invalid argument is a SHARP.

IF all the premises are true, the conclusion CANNOT be false.

This is an example of an invalid argument: the premises are true but the conclusion is false.

Is an argument that give good reasons to believe the conclusion.

The conclusion must follow from the premises.

Logic condition

NO

The argument DOES NOT SATISFIES the logic condition.

YES

The argument SATISFIES the logic condition.

All the premises must be true.

Truth condition

Regarded as FALSE by MEDIEVAL audiences.

Regarded as TRUE by MODERN audiences.

Strong Argument

The distinction between strong and weak argument is a MATTER OF DEGREE.

IF all the premises are true, the conclusion follows with HIGH PROBABILITY.

Example