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 labradors are four legged
All dogs are labradors
Therefore, some dogs are four legged
Valid or invalid?


Really Deep Thought

The aim of philosophy is to understand how things in the broadest possible sense of the term hang together in the broadest possible sense of the term.
   --Wilfred Sellars.


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