Hypothetical Syllogisms

Hypothetical Syllogisms - older with ID will be admitted....

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
BLANK Press play to begin…
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A Night At The Movies Introduction to Modus Ponens and Modus Tollens LOGIC AND CRITICAL THINKING Written by Curtis Peldo, California State University, Chico 1
Background image of page 2
MODUS PONENS P1. If P then Q P2. P C: Q “If P then Q” is a conditional claim. Conditional claims alone are not arguments. Modus Ponens 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MODUS PONENS P1. If P then Q P2. P C: Q P = Antecedent Q = Consequent P1. If P then Q P1. If P then Q Modus Ponens is the mode of affirming , always affirming the antecedent term of the conditional claim P2. P Modus Ponens 3
Background image of page 4
MODUS PONENS P1. If P then Q P2. P C: Q Affirming the Consequent P1. If P then Q P2. Q C: P Modus Ponens Formal Fallacy-Invalid Valid 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MODUS TOLLENS P1. If P then Q P2. Not Q C: Not P Modus Tollens Conditional Claim Modus Tollens is the mode of denying, always denying the consequent term of the conditional claim. P1. If P then Q P2. Not Q C: Not P 5
Background image of page 6
MODUS TOLLENS P1. If P then Q P2. Not Q C: Not P Denying the Antecedent P1. If P then Q P2. Not P C: Not Q Modus Tollens Formal Fallacy-Invalid Valid 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EXAMPLE Only people 17 and
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 12
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: older with ID will be admitted. Tickets are required for admission. Sorry, no passes accepted for this film. This film has been rated NC 17 by the Motion Picture Industry. NC 17 No persons under 17 admitted. 7 Fresh Popcorn - with real butter flavoring! Get yours now in the lobby! EXAMPLE P = Are Admitted to film Q = Are 17 or older Affirming the Consequent P1. If P then Q P2. Q C: P P1. If P then Q P2. P C: Q Modus Ponens Formal Fallacy-Invalid Valid 17 or older Have an ID Have a ticket NC 17 8 EXAMPLE P = Are Admitted to film Q = Are 17 or older Formal Fallacy-Invalid Valid P1. If P then Q P2. Not Q C: Not P Denying the Antecedent P1. If P then Q P2. Not P C: Not Q Modus Tollens 17 or older Have an ID Have a ticket NC 17 9 To be continued. .. The Sequel: Part II: Categorical logic End 10...
View Full Document

Page1 / 12

Hypothetical Syllogisms - older with ID will be admitted....

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online