maría del rosario martínez-ordaz ... - maria martinez-ordaz
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María del Rosario Martínez-Ordaz1
1 Institute for Philosophical Research-UNAMWith support of UNAM-PAPIIT projects
IA401117 “Aspectos filosóficos de las lógicas contraclásicas” and IA401717 “Pluralismo y Normatividad en Lógica y Matematicas”
1-July-2018Ghent, Belgium
Paraconsistent Heuristics, Inconsistent Information and Scientific Practice
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Plan
Paraconsistent approaches
Inconsistent information
Some critiques & motivations
Heuristics (for risk management)
Final remarks
“Narrowly logical approaches”Paraconsistent Reasoning Strategies(minimal paraconsistent approaches)
Paraconsistent tools and HeuristicsRisk management plan
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Preliminaries
Contradiction
A pair of propositions, where one is the negation of the other.
Principle of ExplosionOne of the most characteristic principles of any explosive logic(including, of course, classical logic).It says that any theory, if closed under an explosive logicalconsequence relation, will trivialize when containing acontradiction.
Triviality
A theory is trivial if any proposition is a theorem.
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + logic
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + logic
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + logic
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + Science
History of science
Aristotle’s Theory of Motion
Bohr’s theory of the Atom Classical Electrodynamics Classical Mechanics (T-O) Early Calculus
Kirchhoff’s Theory of Diffraction
Newtonian Cosmology Nineteenth century
physics/geology
Inconsistency toleration
A phenomenon which takes place once agents identify a contradiction in a relevant part of their reasoning and are still able to distinguish between the (inferential) products of their reasoning that are sensible given a particular context from those that are not (Meheus 2002, Carnielli and Coniglio 2016, Friend and Martínez-Ordaz forthcoming).
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + Science
(Re)presentation IdentificationGroups of propositionsFamilies of modelsLanguageLogical consequence(s)Cf. Vickers 2013, Azzouni 2014
Theory itselfTheory-ObservationTheory-Theory
Cf. Priest 2002, Davey 2014
ContradictionEmpirical Scientific Theories
Inconsistency toleration
Logical EpistemicConsistency preservationInconsistency toleration(handling inconsistency mech.,Dialetheism)
Cf. Bueno 2017
UseBelieveEvidenceTruth*
Cf. Vickers 2013,
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + Science + Logic
Contradiction
Inconsistency toleration
(Re)presentation Identification
Logical Epistemic
Adaptive logics
LFIs
Content Driven C.
LP (…)
Pcstnt. Reasoning Str.
Partial Structures
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
+ Reconstructions- Guidance
Paraconsistent Approaches
ParaconsistentApproaches
“Narrowly logical approaches”
Minimal approaches
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Some Critiques
“Narrowly logical approaches” I
The logical approaches that underlie the understanding of the inconsistencytoleration episodes, tend to threaten the understanding of the actualphenomenon (as it was claim for the case of the Priestian theory of motion,in Boccardi and Macias-Bustos 2017, and for some other interesting casesof alleged inconsistency toleration, in Vickers 2013).
“Narrowly logical approaches” II
“Narrowly logical approaches” III
Draw the attention away from the actual premises and arguments offered by scientists (Brown and Priest 2015).
Harman (1984, 1986) human rationality is not necessarily reducible to/ fully guided by/ described by the rules of our preferred formal logic.
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Some motivations
To provide a systematic account of how it is possible to use andcombine inconsistent information without arriving at triviality (Brownand Priest 2015).
Do not draw the attention away from the actual premises andarguments offered by scientists (Brown and Priest 2015).
To systematize how scientists could reason with inconsistent premisesand still avoid triviality –without taking sides in the debates aboutlogical consequence and doxastic commitments in cases ofinconsistent science (Brown 2017).
Minimal Approaches I
Minimal Approaches II
Minimal Approaches III
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Types of inferential proceduresthat they emphasize and theinferential contexts in whichthey are optimally used
Actual reasoning Evidence Truth values Structural relations (theory) …
What are all these things about?
Some motiva-questions
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Despite:
“Narrowly logical approaches” I
Harman (1984, 1986) human rationality is not necessarily reducible to/ fully guided by/ described by the rules of our preferred formal logic.
Can they help us to deal with contradiction?
Some motiva-questions
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Heuristics
Could behave as heuristics in the sense of being regularities for actions wherein “a kind of action (behavior) is characteristically undertaken under specifiable kinds of circumstances to achieve an end, or as part of a larger plan that is designed to do so” (Wimsatt 2007, p. 346).
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Some complications
Could behave as heuristics in the sense of being regularities foractions wherein “a kind of action (behavior) is characteristicallyundertaken under specifiable kinds of circumstances to achieve anend, or as part of a larger plan that is designed to do so”(Wimsatt 2007, p. 346).
How to distinguish between contexts in scientific practice?
How to correlate contexts-paraconsistent heuristics?
Is it possible to know when one approach could be more effective than the others?
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Some complications
“Risk”Evaluation of risk
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Special thanks to Moises Macias for the idea of looking for a solution of this problem by delving into the literature on risk
Heuristics
“We take it for granted that human activity, including science, is purposive.”(Wimsatt 2006)
Science: problem-solving enterprise
Empirical
Conceptual
Anomalies
Logical contradictions
…
Logical contradictions
…
Cf. Laudan 1977
Maximizing utilities, reducing (expected) lossInconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Heuristics
“We take it for granted that human activity, including science, is purposive.”(Wimsatt 2006)
Science: problem-solving enterprise
Empirical
Conceptual
Anomalies
Logical contradictions
…
Logical contradictions
…
Cf. Laudan 1977
Maximizing utilities, reducing (expected) lossInconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
How often do we find contradictions in our (best) scientific empirical theories?
And the risk of explosion?
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Heuristics & Risk
Heuristics
A list of individual risks
A rating of each risk (based on likelihood and impact)
An assessment of current controls (safety preserving mechanisms)
A plan of action (risk management selection)
Plan
Could behave as heuristics in the sense of beingregularities for actions wherein “a kind of action(behavior) is characteristically undertaken underspecifiable kinds of circumstances to achieve anend, or as part of a larger plan that is designed todo so”(Wimsatt 2007, p. 346).
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Inconsistent Information + Science + Logic
Contradiction
Inconsistency toleration
(Re)presentation Identification
Logical Epistemic
Adaptive logics
LFIs
Content Driven C.
LP (…)
Pcstnt. Reasoning Str.
Partial Structures
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
+ Reconstructions
+ Guidance
Despite:
“Narrowly logical approaches” I
Harman (1984, 1986) human rationality is not necessarily reducible to/ fully guided by/ described by the rules of our preferred formal logic.
Can they help us to deal with contradiction in Sc Practice?
Final Remarks
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
Can they help us to deal with contradiction in Sc Practice?
Final Remarks
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz
María del Rosario Martínez-Ordaz1
1 Institute for Philosophical Research-UNAMWith support of UNAM-PAPIIT projects
IA401117 “Aspectos filosóficos de las lógicas contraclásicas” and IA401717 “Pluralismo y Normatividad en Lógica y Matematicas”
1-July-2018Ghent, Belgium
Paraconsistent Heuristics, Inconsistent Information and Scientific Practice
InconsistentInformation
ParaconsistentApproaches
Some Critiques& motivations
Heuristics
Final Remarks
Paraconsistent Heuristics,Inconsistent
Information and Scientific Practice
María del Rosario Martínez-Ordaz