Lecture 5 Chapter 2 Begins Sept 18, 2013
*you cannot have sound/unsound. This is a distinction between deductive. Inductive arguments
are not judged by whether or not they are true to judge whether or not they are strong or weak.
: If the premises are true, would it make likely for the conclusion to be true? Is so and so
Ex: Smith said his plane arrives in Calgary at 8pm.
So Smith is in Calgary now.
: Is it likely that the conclusion is true if assuming the premises are true?
Ex: The flames won when I was wearing a red shirt.
I will be wearing a red shirt tonight.
So the Flames will win tonight. Terms:
Common names (= Count nouns)
Examples: ‘plants’, ‘buildings’, ‘cars’
Double quotes are generally for quotations, single quotes are for the word or what it