Abstract: I provide a truth-maker semantics for the conditional and consider the application to imperative and deontic conditionals.
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
Physicists and philosophers question the validity of one of the most observed and seemingly obvious appearance in our world: that time flows. Many in the physics and philosophy communities contend that the flow of time is not a fundamental feature of the world, nor even a fact of the world, but is an illusion. As a case in point, we will consider Brian Greene’s view of time in his PBS exposition “The Elegant Universe” holding that time may not flow, the past may not be gone, the future may already exist, and that now is not special. Most people, as observers of time’s passage, might agree with the Greek philosopher Heraclitus who expressed the idea that all is change and that change occurs with the flow of time. I will explore some of the motivation and reasons given for these positions and contrast the arguments made for each viewpoint.
The schedule: a short presentation on topic of 3-D Printing, and then Stuart’s presentation for about 1 hr. plus time for questions. It is necessary to register beforehand to be admitted.
CV: Stuart Kurtz graduated from MIT with an SB in Chemical Engineering and from Princeton with an MS degree in Polymer Engineering and an MA and PhD. in Chemical Engineering. He taught at RPI and in Brazil as Professor Titular in Materials Engineering. This was followed by a research career in industry accumulating around 30 patents and publishing at least a few good papers. He now focuses on Philosophy of Science and Physics and climbing mountains because they are there. He has spoken to the Lyceum Society many times; most recently in January, 2018 he spoke on the topic: Lessons from Science Lysenko, Velikovsky and the Demarcation Problem; In February, 2018 he spoke on Geoengineering for Climate Change Mitigation. In December, 2018 he reviewed the Nobel Prize in Physics for that year.
In my talk I argue for the thesis CT: contradiction is the norm of truth, and ask about its relevance for contemporary philosophical logic. I first present three positions in the history of philosophy that have advocated some versions of CT, namely Plato’s idea of the “dialectical gymnastics” in the Parmenides (Plato, Parmenides 136 B-E), Aristotle’s notion of dialectics in the Topics (Aristotle, Topics I, 2-3) and Metaphysics (Aristotle, Met III 1, 995 a 24-29), and Hegel’s contradictio est regula veri (Hegel Werke 2, 533), then derive from them some answers to the questions:
What is meant by “contradiction” in CT?
What is meant by “truth” in CT?
What is meant by “norm” in CT?
I will show that to examine the meaning of CT in historical perspective is useful to understand the seeds of genuine glut theories.
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
In this talk I will do three things. First: I will present the central results from Barrio, Pailos and Szmuc’s recent paper “A hierarchy of classical and paraconsistent logics” (forthcoming in the JPL) along with some generalizations derived by observing certain symmetries; second, I will discuss the relation between the strict tolerant logics and classical logic, K3 and LP; third, I will try to convey the exact state of uncertainty about the philosophical significance of the foregoing I find myself in on the day.
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
In her paper, “The Non-Governing Conception of Laws,” Helen Beebee argues that it is not a conceptual truth that laws of nature govern their instances, and that this fact insulates Humeans about laws of nature from some of the most pressing objections against their view. I agree with the first claim, but not the second. For although it is not a conceptual truth that laws govern, the view that laws govern follows straightforwardly from an important, though under-appreciated, principle that constrains scientific theory choice, and the principles that constrain scientific theory choice ought to constrain theory choice in metaphysics as well. I then show how the specific understanding of governance that plays a role in this argument raises serious concerns for Humeans about laws of nature.
There will be dinner after the talk. If you are interested, please send an email with `Dinner’ in the heading to nyphilsci@gmail.com (please note that all are welcome, but only the speaker’s dinner will be covered). If you have any other questions, please email isaac.wilhelm@rutgers.edu.
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
Structural causal models lend themselves to an analysis of counterfactuals – a structural semantics of counterfactuals. The basic idea is that a causal model allows for the clear and precise evaluation of any counterfactual encoded by it. Many argue that a structural semantics is superior to a more traditional similarity semantics, in part due to the latter’s independence from any notion of similarity(Galles & Pearl, 1998; Gallow, 2016; Hiddleston, 2005; Hitchcock, 2018; Pearl, 2000; Starr, 2019). I argue, though, that this is too quick. A similarity semantics employs the notion of similarity to answer what Priest (2018) calls the importation problem– the question of what information is to be held fixed in a counterfactual evaluation. I argue that where similarity semantics relies on an unarticulated notion of similarity, a structural semantics relies on an unarticulated notion of aptness. The superiority of structural semantics depends on its ability to deliver on a principled guide to determining which model(s) is apt. In this talk I go some way towards providing this guide.
The Logic and Metaphysics Workshop will be meeting on Mondays from 4:15 to 6:15 in room 7314 of the Graduate Center, CUNY (365 5th Avenue). The (provisional) schedule is as follows:
Feb 4. Melvin Fitting, CUNY
Feb 11. Benjamin Neeser, Geneva
Feb 18. GC CLOSED. NO MEETING
Feb 25. Achille Varzi, Columbia
Mar 4. Eric Bayruns Garcia, CUNY
Mar 11. Jeremy Goodman, USC
Mar 18. Romina Padro, CUNY
Mar 25. Kit Fine, NYU
Apr 1. Elena Ficara, Paderborn
Apr 8. Chris Scambler, NYU
Apr 15. Jenn McDonald, CUNY
Apr 22. GC CLOSED. NO MEETING
Apr 29. Tommy Kivatinos, CUNY
May 6. Daniel Durante, Natal
May 13. Martina Botti, Columbia
May 20. Vincent Peluce, CUNY
I analyse the exploratory function of two main modelling practices: targetless fictional models and hypothetical perspectival models. In both cases, I argue, modelers invite us to imagine or conceive something about the target system, which is either known to be non-existent (fictional models) or just hypothetical (in perspectival models). I clarify the kind of imagining or conceiving involved in each modelling practice, and I show how each—in its own right—delivers important modal knowledge. I illustrate these two kinds of exploratory models with Maxwell’s ether model and SUSY models at the LHC.
There may be a coffee/snack time after the talk, depending on how tired our speaker is from having traveled a lot earlier that day (the coffee/snack time will be attended by, among other special guests, the speaker’s child). If you are interested, please send an email with `coffee/snack’ in the heading to nyphilsci@gmail.com (please note that all are welcome, but only the speaker’s family’s coffee/snacks will be covered). If you have any other questions, please email isaac.wilhelm@rutgers.edu.
Presented by Metro Area Philosophers of Science
14.30 – 15.30: Kit Fine: A Truthmaker Semantics for Conditional Imperatives
15.30 – 15.45: Coffee Break
15.45 – 16.45: Friederike Moltmann: Underspecification of Attitudes and Truthmaker
Semantics
16.45-17.00: Coffee Break
17.00 – 18.00: Federico Faroldi: Truthmaker Semantics for Justification Logics – Open
Problems (joint work with Tudor Protopopescu)
18.00-18.15: Coffee Break
18.15 – 19.15: Cian Dorr: Truthmaking in the Object Language
K. Fine: A Truthmaker Semantics for Conditional Imperatives
I provide a truth-maker semantics for conditional imperatives and indicate how it might be extended to other conditional constructions.
F. Moltmann: Underspecification of Attitudes and Truthmaker Semantics
It has been argued that the satisfaction conditions of a desire can be underspecified by the complement clause. This provides support for the view according to which the complement clause gives a partial content of the reported desire, where partial content is formulated in terms of truthmaker theory. In this talk, I will discuss the extent of such underspecification and whether it truly supports a truthmaker-based approach to the content of attitudes.
Optional preparatory reading here.
F. Faroldi: Truthmaker Semantics for Justification Logics – Open Problems
Justification logics are a family of logic where "implicit" modal operators are substituted by explicit terms to get formulas of the form t : A, where t could be evidence, a reason, etc. why A is known, believed, obligatory, etc., thus resulting in an “objectual” approach to modalities. In this talk we explore how to give a truthmaker semantics for justification logics, we provide some philosophical reasons to do so, and note some technical open problems.
Cian Dorr: Truthmaking in the Object Language
I consider a simple language with Boolean connectives, sentential variables and quantifiers binding them, and a connective for propositional identity (‘for it to be the case that … is for it to be the case that …’). Using familiar techniques, the possible-worlds model theory for such a language can be ‘internalised’ to derive a theory stated in the language itself, based on the definition of ‘world-proposition’ as ‘maximal consistent proposition’, and this theory can be shown to follow from the theory that propositions form a complete atomic Boolean algebra. In this paper, I will consider to what extent something similar can be done for Fine’s truthmaker semantics. This will involve looking for a way of picking out a class of special propositions to serve as surrogates for the states, and a binary relation among propositions to serve as a surrogate for the verification relation, and using these definitions to rewrite the metalinguistic definition of a model as theory in the object-language. I will make a start at considering to what extent the axioms of this theory can be derived from an independently natural weakening of the theory that propositions form a complete atomic Boolean algebra.