Problem Solving
No cats are dogs, No dogs are cows, no cats are cows
Factually correct, Not valid, Not sound
If I go to the store and bring my Doritos coupon, then I will buy a bag of Doritos. I am going to the store. I forgot my coupon. Therefore I will be buying a bag of Doritos.
(S&C) -> D; S; ~C / D
Invalid.
Ohwwf Uld Flhyz!
Happy New Years!
P -> Q ; ~Q / ~P
Valid
Introducing a completely unrelated topic to an argument to throw off the opponent
Red Herring