–> Deductive valid
Analysis: All Monkeys like bananas, and Lucy is a monkey. Therefore, Lucy likes bananas. The word “ALL” in the premise is correct and proved. Lucy just is one monkey of this group, so he also likes bananas. The conclusion must be true and thus valid.
- Nothing is better than eternal happiness.
- Eating a hamburger is better than nothing.
- Therefore, eating a hamburger is better than eternal happiness.
–> This is a fallacy of equivocation.
Analysis: The premise A hamburger is better than nothing does not provide anything to this argument. This fact really means that “Eating a hamburger is better than eating nothing at all”
I always hang pictures on nails.
All pictures hang from nails.
–> Weak Induction
Analysis: The link between the premise and the conclusion is very weak. Not all pictures are hung from nails; moreover, not all pictures are hung. Therefore, this argument is an instance of weak induction.