SlideShare une entreprise Scribd logo
1  sur  56
Télécharger pour lire hors ligne
Logic and Rationality; 
Disagreement and Evidence 
or why Fact-Checking Units are a Good Thing, 
even if they don’t lead us to agreement 
Greg Restall 
Science, Technology, Future · August 23, 2014
Fact-Checking
Isn’t this anachronistic?
Harking back to an age of experts?
Isn’t it philosophically naïve?
Especially when we consider 
politically controversial topics.
What is a fact, anyway?
Don’t ask what a fact is…
…ask what a fact does.
Or better, what you do when 
you call something a fact.
Or better, what you do when 
you call something a fact.
It’s a fact that 
the climate is changing 
and that sea levels are rising.
The climate is changing 
and that sea levels are rising.
It’s a fact that p
p
It’s a fact that most people 
in Australia have a higher 
standard of living 
than 18 years ago.
Most people 
in Australia have a higher 
standard of living 
than 18 years ago. 
http://theconversation.com/factcheck-is-poverty-on-the-rise-in-australia-17512
To show that it’s a fact that p
you show that p.
p, but it’s not a fact that p.
It’s a fact that p, but not p.
Giving Reasons
Philosophically naïve?
No
Isn’t this anachronistic?
No
Looking back to an age of experts?
No, but…
You show that something is a fact 
by giving your reasons.
We move beyond 
“he said / she said” journalism.
What about when 
Fact-Checking sites disagree?
What about areas 
of moral disagreement?
Providing reasons can help, even 
when it doesn’t lead to agreement.
It maps out the field of options.
It helps us understand each other.
We keep each other 
(and ourselves) honest.
We learn more of what 
a claim really involves.
Sometimes, it can convince.
Where can we go 
from here?
Fact-Checking sites are a start.
Support them, and support 
quality journalism 
over “he said / she said” substitutes.
Inculcate a culture 
of valuing reasons.
The more you are exposed to 
good reasoning, the more 
you’ll recognise it, and be able to produce 
great reasoning of your own.
Be prepared to give your reasons, 
and be curious about the 
reasons of others.
Don’t expect to come to agreement.
But be prepared to find 
some common ground.
Thanks for listening
Any Questions?
Greg Restall 
restall@unimelb.edu.au 
consequently.org 
@consequently

Contenu connexe

Similaire à Logic and Rationality; Disagreement and Evidence - Greg Restall

1 2 t4_chapter_one_powerpoint_new
1 2 t4_chapter_one_powerpoint_new1 2 t4_chapter_one_powerpoint_new
1 2 t4_chapter_one_powerpoint_new
sagebennet
 
Discussion 2Ch 241.Compare and contrast various interpret.docx
Discussion 2Ch 241.Compare and contrast various interpret.docxDiscussion 2Ch 241.Compare and contrast various interpret.docx
Discussion 2Ch 241.Compare and contrast various interpret.docx
duketjoy27252
 
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docxPROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
amrit47
 
Truth And Opinion.pptx
Truth And Opinion.pptxTruth And Opinion.pptx
Truth And Opinion.pptx
TedsTV
 
Informal FallaciesEnterline Design Services LLCiStockThinkst.docx
Informal FallaciesEnterline Design Services LLCiStockThinkst.docxInformal FallaciesEnterline Design Services LLCiStockThinkst.docx
Informal FallaciesEnterline Design Services LLCiStockThinkst.docx
dirkrplav
 

Similaire à Logic and Rationality; Disagreement and Evidence - Greg Restall (19)

Fact, opinion, and opinion
Fact, opinion, and opinionFact, opinion, and opinion
Fact, opinion, and opinion
 
1 2 t4_chapter_one_powerpoint_new
1 2 t4_chapter_one_powerpoint_new1 2 t4_chapter_one_powerpoint_new
1 2 t4_chapter_one_powerpoint_new
 
Lesson 2 methods of philosophizing
Lesson 2 methods of philosophizingLesson 2 methods of philosophizing
Lesson 2 methods of philosophizing
 
Discussion 2Ch 241.Compare and contrast various interpret.docx
Discussion 2Ch 241.Compare and contrast various interpret.docxDiscussion 2Ch 241.Compare and contrast various interpret.docx
Discussion 2Ch 241.Compare and contrast various interpret.docx
 
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docxPROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
PROS AND CONS OF 53 CONTROVERSIAL ISSUESEDUCATION1. College .docx
 
Winning arguments-fish-en-27067
Winning arguments-fish-en-27067Winning arguments-fish-en-27067
Winning arguments-fish-en-27067
 
How to Win Every Argument ( PDFDrive ) (1).pdf
How to Win Every Argument ( PDFDrive ) (1).pdfHow to Win Every Argument ( PDFDrive ) (1).pdf
How to Win Every Argument ( PDFDrive ) (1).pdf
 
TOK 2
TOK 2TOK 2
TOK 2
 
Truth And Opinion.pptx
Truth And Opinion.pptxTruth And Opinion.pptx
Truth And Opinion.pptx
 
lesson2methodsofphilosophizing-.pptx
lesson2methodsofphilosophizing-.pptxlesson2methodsofphilosophizing-.pptx
lesson2methodsofphilosophizing-.pptx
 
Thinking
ThinkingThinking
Thinking
 
Logical Fallacies
Logical FallaciesLogical Fallacies
Logical Fallacies
 
Topic 5. determining truth
Topic 5. determining truthTopic 5. determining truth
Topic 5. determining truth
 
Dean R Berry Conspiracy Theories: Claims and Evidence
Dean R Berry Conspiracy Theories:  Claims and EvidenceDean R Berry Conspiracy Theories:  Claims and Evidence
Dean R Berry Conspiracy Theories: Claims and Evidence
 
Types of Evidence & Understanding Credibility
Types of Evidence & Understanding CredibilityTypes of Evidence & Understanding Credibility
Types of Evidence & Understanding Credibility
 
Gay Marriage Argument Essay.pdf
Gay Marriage Argument Essay.pdfGay Marriage Argument Essay.pdf
Gay Marriage Argument Essay.pdf
 
Topic 5. determining truth
Topic 5. determining truthTopic 5. determining truth
Topic 5. determining truth
 
IR I - Introduction to Rationality
IR I - Introduction to RationalityIR I - Introduction to Rationality
IR I - Introduction to Rationality
 
Informal FallaciesEnterline Design Services LLCiStockThinkst.docx
Informal FallaciesEnterline Design Services LLCiStockThinkst.docxInformal FallaciesEnterline Design Services LLCiStockThinkst.docx
Informal FallaciesEnterline Design Services LLCiStockThinkst.docx
 

Plus de Adam Ford

Can we know the future? By John Wilkins
Can we know the future?  By John WilkinsCan we know the future?  By John Wilkins
Can we know the future? By John Wilkins
Adam Ford
 
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
Adam Ford
 
Ben Goertzel - Singularity Summit Australia talk in 2011
Ben Goertzel - Singularity Summit Australia talk in 2011Ben Goertzel - Singularity Summit Australia talk in 2011
Ben Goertzel - Singularity Summit Australia talk in 2011
Adam Ford
 
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
Adam Ford
 
Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
 Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015 Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
Adam Ford
 
Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
 Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015 Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
Adam Ford
 
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
Adam Ford
 

Plus de Adam Ford (19)

Can we know the future? By John Wilkins
Can we know the future?  By John WilkinsCan we know the future?  By John Wilkins
Can we know the future? By John Wilkins
 
Rationality & Moral Judgement – Simon Laham - EA Global Melbourne 2015
Rationality & Moral Judgement – Simon Laham - EA Global Melbourne 2015Rationality & Moral Judgement – Simon Laham - EA Global Melbourne 2015
Rationality & Moral Judgement – Simon Laham - EA Global Melbourne 2015
 
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
Ben Goertzel AIs, Superflies and the Path to Immortality - singsum au 2011
 
Ben Goertzel Monash 2011
Ben Goertzel Monash 2011Ben Goertzel Monash 2011
Ben Goertzel Monash 2011
 
Ben Goertzel - Singularity Summit Australia talk in 2011
Ben Goertzel - Singularity Summit Australia talk in 2011Ben Goertzel - Singularity Summit Australia talk in 2011
Ben Goertzel - Singularity Summit Australia talk in 2011
 
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
Justin Oakley - Virtue Ethics and Effective Altruism - EA Global Melbourne 2015
 
Kerry Vaughan - Be Greedy For The Most Good You Can Do - EA Global Melbourne ...
Kerry Vaughan - Be Greedy For The Most Good You Can Do - EA Global Melbourne ...Kerry Vaughan - Be Greedy For The Most Good You Can Do - EA Global Melbourne ...
Kerry Vaughan - Be Greedy For The Most Good You Can Do - EA Global Melbourne ...
 
Jess Whittlestone - Rationality & Effective Altruism - EA Global Melbourne 2015
 Jess Whittlestone - Rationality & Effective Altruism - EA Global Melbourne 2015 Jess Whittlestone - Rationality & Effective Altruism - EA Global Melbourne 2015
Jess Whittlestone - Rationality & Effective Altruism - EA Global Melbourne 2015
 
Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
 Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015 Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
Peter Singer - Non-Human Animal Ethics - EA Global Melbourne 2015
 
Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
 Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015 Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
Hilary Graves - Repugnant Interventions - EA Global Melbourne 2015
 
Alexis Carlier - Animal Charity Evaluation - EA Global Melbourne 2015
Alexis Carlier - Animal Charity Evaluation - EA Global Melbourne 2015Alexis Carlier - Animal Charity Evaluation - EA Global Melbourne 2015
Alexis Carlier - Animal Charity Evaluation - EA Global Melbourne 2015
 
Sam deere – Giving What We Can - EA Global
Sam deere – Giving What We Can - EA GlobalSam deere – Giving What We Can - EA Global
Sam deere – Giving What We Can - EA Global
 
Sam Deere – Effective Altruism and Policy Change - EA Global
Sam Deere – Effective Altruism and Policy Change - EA GlobalSam Deere – Effective Altruism and Policy Change - EA Global
Sam Deere – Effective Altruism and Policy Change - EA Global
 
Effective Altruism & Christianity by Leon di Stefano
Effective Altruism & Christianity by Leon di StefanoEffective Altruism & Christianity by Leon di Stefano
Effective Altruism & Christianity by Leon di Stefano
 
The Technological Singularity - Risks & Opportunities - Monash University
The Technological Singularity - Risks & Opportunities - Monash UniversityThe Technological Singularity - Risks & Opportunities - Monash University
The Technological Singularity - Risks & Opportunities - Monash University
 
Science v Pseudoscience: What’s the Difference? - Kevin Korb
Science v Pseudoscience: What’s the Difference? - Kevin KorbScience v Pseudoscience: What’s the Difference? - Kevin Korb
Science v Pseudoscience: What’s the Difference? - Kevin Korb
 
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
Life, Knowledge and Natural Selection― How Life (Scientifically) Designs its ...
 
The shaky foundations of science slides - James Fodor
The shaky foundations of science slides - James FodorThe shaky foundations of science slides - James Fodor
The shaky foundations of science slides - James Fodor
 
Tim Josling - Bayes' Rule Reprise - Impediments to the Singularity
Tim Josling - Bayes' Rule Reprise - Impediments to the SingularityTim Josling - Bayes' Rule Reprise - Impediments to the Singularity
Tim Josling - Bayes' Rule Reprise - Impediments to the Singularity
 

Dernier

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 bAsymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Sérgio Sacani
 
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
ssuser79fe74
 
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune WaterworldsBiogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Sérgio Sacani
 
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Lokesh Kothari
 

Dernier (20)

Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 bAsymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
 
FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry
FAIRSpectra - Enabling the FAIRification of Spectroscopy and SpectrometryFAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry
FAIRSpectra - Enabling the FAIRification of Spectroscopy and Spectrometry
 
Botany 4th semester series (krishna).pdf
Botany 4th semester series (krishna).pdfBotany 4th semester series (krishna).pdf
Botany 4th semester series (krishna).pdf
 
Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service
Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts ServiceJustdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service
Justdial Call Girls In Indirapuram, Ghaziabad, 8800357707 Escorts Service
 
CELL -Structural and Functional unit of life.pdf
CELL -Structural and Functional unit of life.pdfCELL -Structural and Functional unit of life.pdf
CELL -Structural and Functional unit of life.pdf
 
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
Chemical Tests; flame test, positive and negative ions test Edexcel Internati...
 
module for grade 9 for distance learning
module for grade 9 for distance learningmodule for grade 9 for distance learning
module for grade 9 for distance learning
 
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune WaterworldsBiogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
Biogenic Sulfur Gases as Biosignatures on Temperate Sub-Neptune Waterworlds
 
GBSN - Microbiology (Unit 1)
GBSN - Microbiology (Unit 1)GBSN - Microbiology (Unit 1)
GBSN - Microbiology (Unit 1)
 
Call Girls Alandi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Alandi Call Me 7737669865 Budget Friendly No Advance BookingCall Girls Alandi Call Me 7737669865 Budget Friendly No Advance Booking
Call Girls Alandi Call Me 7737669865 Budget Friendly No Advance Booking
 
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
Labelling Requirements and Label Claims for Dietary Supplements and Recommend...
 
Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b
Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43bNightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b
Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b
 
Proteomics: types, protein profiling steps etc.
Proteomics: types, protein profiling steps etc.Proteomics: types, protein profiling steps etc.
Proteomics: types, protein profiling steps etc.
 
Zoology 4th semester series (krishna).pdf
Zoology 4th semester series (krishna).pdfZoology 4th semester series (krishna).pdf
Zoology 4th semester series (krishna).pdf
 
SAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICE
SAMASTIPUR CALL GIRL 7857803690  LOW PRICE  ESCORT SERVICESAMASTIPUR CALL GIRL 7857803690  LOW PRICE  ESCORT SERVICE
SAMASTIPUR CALL GIRL 7857803690 LOW PRICE ESCORT SERVICE
 
Factory Acceptance Test( FAT).pptx .
Factory Acceptance Test( FAT).pptx       .Factory Acceptance Test( FAT).pptx       .
Factory Acceptance Test( FAT).pptx .
 
Nanoparticles synthesis and characterization​ ​
Nanoparticles synthesis and characterization​  ​Nanoparticles synthesis and characterization​  ​
Nanoparticles synthesis and characterization​ ​
 
Feature-aligned N-BEATS with Sinkhorn divergence (ICLR '24)
Feature-aligned N-BEATS with Sinkhorn divergence (ICLR '24)Feature-aligned N-BEATS with Sinkhorn divergence (ICLR '24)
Feature-aligned N-BEATS with Sinkhorn divergence (ICLR '24)
 
GBSN - Biochemistry (Unit 1)
GBSN - Biochemistry (Unit 1)GBSN - Biochemistry (Unit 1)
GBSN - Biochemistry (Unit 1)
 
9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000
9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 60009654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000
9654467111 Call Girls In Raj Nagar Delhi Short 1500 Night 6000
 

Logic and Rationality; Disagreement and Evidence - Greg Restall