1W · One Card Wiser

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Good structure also needs true starting points

A sound deductive argument is valid and has true premises.

The idea

A tidy logical chain can still mislead if it begins with a false claim. Soundness requires both parts.

An example

A claim about every customer cannot be established using an unverified premise about all people.

Put it into practice

Ask: does it follow, and are its starting claims true?

Further reading: OpenStax · Introduction to Philosophy ↗

Test yourself: What makes a deductive argument sound?

Valid structure and true premises

Both validity and true premises are required.

Explanation and illustrative examples by One Card Wiser. Source linked for further reading.

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