Logic / Logic 014 · Atom · ~20 seconds
Valid with False Premises
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State
A valid argument can have false premises and a false conclusion — validity only promises: *if* the premises were true, the conclusion would be too.
Show
"All planets are cubes; Mars is a planet; so Mars is a cube." Valid. Absurd, but valid.
Watch for
Calling this "invalid" because it's false is the error video 013 warned about.