(1 of 2) The Concept of a Valid Argument.

Introduction to the concept of a valid argument, specifically, deductive validity - arguably the only kind. Emphasizes the difference between truth and validity. Truth is about what is the case in the world, validity is a logical relationship between the premisses and conclusion of an argument, which can be evaluated independently of whether one thinks the premisses are true or false.

Category:

Education

Tags:

• logic
• deduction
• valid
• argument

[DoCWaSaBe]

lol the first is a statement which simply isn't true, your standing there

the second becomes a hypothetical situation

[NaiveRealist]

Thanks for the comment. Your right about the statements (I assume you're alluding to the statements about my jumping from the roof). The point was just to illustrate the concept of a subjunctive conditional (or hypothetical), so that the concept of a valid argument would be easier to understand. Ray

[Steve2323ZX]

the conditional statement doesn't specify what is at the bottom of the building. the second statement will be false if the teacher jumps off the building and is caught by a group of firefighters holding a trampoline or if there is a swimming pool filled with water at the bottom or etc