Dinosaur Meme

Valid or Invalid? - The Syllogisms

Syllogism 1 of 15

Remember, we're interested only in whether the argument is valid; that is, whether the conclusion follows as a matter of necessity given the truth of the premises. Just select "Valid" or "Invalid" from the drop-down list below, then press Next.

All malfunctioning machines are annoyances
Some annoyances are computers
Therefore, some computers are not malfunctioning machines
Valid or invalid?

Really Deep Thought

Lawyers tend to be tennis and squash players - maybe it's the competitive element - but philosophers tend to be runners, perhaps because of the loner, contemplative quality.
   --Martha Nussbaum.

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