WOK : Reason.

Slides:

Advertisements

Similar presentations

Can you think of five famous people who you feel are rational/logical?

Advertisements

Sec.2-3 Deductive Reasoning

Inductive and Deductive Reasoning

1 Valid and Invalid arguments. 2 Definition of Argument Sequence of statements: Statement 1; Statement 2; Therefore, Statement 3. Statements 1 and 2 are.

Deduction: the categorical syllogism - 1 Logic: evaluating deductive arguments - the syllogism 4 A 5th pattern of deductive argument –the categorical syllogism.

Deduction CIS308 Dr Harry Erwin. Syllogism A syllogism consists of three parts: the major premise, the minor premise, and the conclusion. In Aristotle,

Inductive and Deductive Reasoning Geometry 1.0 – Students demonstrate understanding by identifying and giving examples of inductive and deductive reasoning.

DEDUCTIVE & INDUCTIVE ARGUMENTS

Deductive vs. Inductive Reasoning. Objectives Use a Venn diagram to determine the validity of an argument. Complete a pattern with the most likely possible.

Logic and Reason. Deductive Reasoning Reasoning that moves from the general to the particular Watchdogs bark at strangers. The watchdog did not bark at.

Logic and Philosophy Alan Hausman PART ONE Sentential Logic Sentential Logic.

REASONING Deductive reasoning - syllogisms. Syllogisms are examples of gaining knowledge by reasoning. Can you discuss in your groups the benefits of.

Reason “Crime is common, logic is rare” - Sherlock Holmes.

Logic in Everyday Life.

Deductive Reasoning.  Conditional Statements can be written using symbolic notation  p represents hypothesis  q represents conclusion  is read as.

Question of the Day!  We shared a lot of examples of illogical arguments!  But how do you make a LOGICAL argument? What does your argument need? What.

Critical Thinking (do quiz on page 21). Characteristics of a Good Critical Thinker (p. 23, 27) Truth Seeking Open Minded Analytic Systematic Persistent.

#tbt #4 Who Owns The Zebra?

Ways of Knowing: Reason Reason. Cogito ergo sum Reasoning Deductive Inductive.

Philosophical Method  Logic: A Calculus For Good Reason  Clarification, Not Obfuscation  Distinctions and Disambiguation  Examples and Counterexamples.

Critical Thinking, Reading and Writing Part 2 Ed McCorduck CPN 101—Academic Writing II on Computer SUNY Cortland

Deductive and induction reasoning

Syllogisms and Three Types of Hypothetical Syllogisms

SYLLOGISTIC REASONING PART 2 Properties and Rules PART 2 Properties and Rules.

Warm-up - Sept 22 (Tuesday) 8. Which conditional and its converse form a true biconditional? a. Write the two conditional statements that make up this.

Critical Thinking: A User’s Manual

Deductive and Inductive Reasoning

Deductive reasoning. The curious incident An expensive racehorse has been stolen. A policeman asks Holmes if any aspect of the crime strikes him as significent.

Reason. Reason It rained last night. It rained last night. There are no sharks in Sun-Moon lake. There are no sharks in Sun-Moon lake. The sun will rise.

I think therefore I am - Rene Descartes. REASON (logic) It has been said that man is a rational animal. All my life I have been searching for evidence.

REASONING as a Way of Knowing. REASONING Our capacity to think beyond our immediate experiences We use reasoning to build our knowledge and to evaluate.

Section 3.6 Reasoning and Patterns. Deductive Reasoning Deductive reasoning starts with a general rule, which we know to be true. Then from that rule,

Chapter 2 Section 2.3 Apply Deductive Reasoning. Deductive Reasoning Uses facts, definitions, accepted properties, and the laws of logic to form a logical.

Deductive logic What is it? What is it? How does it work? How does it work? Why does it matter? Why does it matter? All generalizations are false, including.

09/17/08 BR- Identify the premises and the conclusion in the following deductive argument. Is it valid or invalid? All fish need gills to breath water.

Deductive vs. Inductive Arguments

SOURCE OF KNOWLEDGE Or OBSTACLE TO IT?

Deductive reasoning.

What is it? How does it work? Why does it matter?

a valid argument with true premises.

Deductive Logic, Categorical Syllogism

REQUIRED DELIVERABLES

Chapter 3 Philosophy: Questions and theories

Using Deductive Reasoning to Verify Conjectures 2-3

Evaluating truth tables

3 Logic The Study of What’s True or False or Somewhere in Between.

MAT 142 Lecture Video Series

2-3 Deductive Reasoning Objectives:

Reasoning, Logic, and Position Statements

DEDUCTIVE vs. INDUCTIVE REASONING

DEDUCTIVE vs. INDUCTIVE REASONING

Inductive and Deductive Logic

Objective Apply the Law of Detachment and the Law of Syllogism in logical reasoning.

DEDUCTIVE vs. INDUCTIVE REASONING Section 1.1. Problem Solving Logic – The science of correct reasoning. Reasoning – The drawing of inferences or conclusions.

Concise Guide to Critical Thinking

DEDUCTIVE vs. INDUCTIVE REASONING

Notes 2.3 Deductive Reasoning.

Deductive Reasoning BIG IDEA: REASONING AND PROOF

Premise: If it’s a school day, then I have Geometry class.

Section 3.6 Euler Diagrams and Syllogistic Arguments

Deductive vs. Inductive Reasoning

Learning Target Students will be able to: Apply the Law of Detachment and the Law of Syllogism in logical reasoning.

Deductive & Inductive Reasoning

Syllogisms and Enthymemes.

Propositional Logic 1) Introduction Copyright 2008, Scott Gray.

ID1050– Quantitative & Qualitative Reasoning

Evaluating Deductive Arguments

If there is any case in which true premises lead to a false conclusion, the argument is invalid. Therefore this argument is INVALID.

DEDUCTIVE vs. INDUCTIVE REASONING

If there is any case in which true premises lead to a false conclusion, the argument is invalid. Therefore this argument is INVALID.

Presentation transcript:

WOK : Reason

Sharks in Fresh water rivers! Is it safe to swim in a river, will we find a great white shark there… The above picture is a guy in a river in Switzerland We use reason to conclude that there is no sharks in Switzerland and it is safe to swim.

3 kinds of Reasoning Deductive reasoning Inductive Reasoning Informal Reasoning In our discussion we will meet what are called fallacies…invalid patterns of reasoning

Deductive reasoning Deductive reasoning is any form of reasoning that moves from a general to a particular example All dogs are mammals Fido is a dog Fido is a mammals This is called syllogisms 2 premises Three terms which occur twice 1 conclusion Quantifiers

All Italians eat spaghetti Jean Luca eats spaghetti Therefore Jean Luca is an Italian Find the 2 premises? The Conclusion Is it valid?

Truth V Validity All panthers are pink Che Guevara is a panther Che Guevera is pink Look at the premises … false Look at the conclusion…. False But the argument is valid

Make up your own syllogisms to illustrate…. 3 true premises and a true conclusion 1 true premise, 1 false premise and a true conclusion 2 false premises and a false conclusion Use the penguin in your syllogism…..

Valid or Invalid No martins have red noses Rudolph has a red nose Therefore Rudolph is not a Martin All bull fighters are brave people Some brave people are compassionate Therefore some bull fighters are compassionate Some Monks are Tibetan All Tibetans are good at Yoga Therefore some monks are good at Yoga