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Re: Why predictions about the future have no truth value

Newsgroups sci.logic
Date 2023-07-02 17:49 -0700
References (82 earlier) <c0c7c388-9ea1-48fa-abd6-3947217e3bcbn@googlegroups.com> <6e78bd07-f5ac-442c-88d5-160446883115n@googlegroups.com> <4c61ce6a-2ad0-4e30-97e6-0fdad07afa33n@googlegroups.com> <40f22cbe-e00f-4e62-832f-1a1d7ae4737bn@googlegroups.com> <28f38417-7343-47e1-885d-24f50d56badan@googlegroups.com>
Message-ID <9ad643d0-819c-4bb9-980e-f6c727ded62dn@googlegroups.com> (permalink)
Subject Re: Why predictions about the future have no truth value
From Dan Christensen <Dan_Christensen@sympatico.ca>

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On Sunday, July 2, 2023 at 6:37:43 PM UTC-4, Mild Shock  (aka Mr. Collapse) wrote:

> Dan Christensen schrieb am Donnerstag, 29. Juni 2023 um 05:37:46 UTC+2: 

[snip]
 
> > > You didn't formalize the notion "fact" versus "fiction". 
> > > Usually first order logic or propostional logic do not 
> > > make this distinction. Again in terms of Mark Thakkars 
> > > paper, you would need a formalism that can say that this is fact: 
> > > 
> > > "It was raining yesterday." 
> > > Today(x) & Rain(x-1) 
> > > 
> > [snip] 
> > 
> > "It was raining in the past. (fact?) 
> > x in N & Today(x) & EXISTS(y):[ y in N & y<x & Rain(y)] 
> > > And that this is fiction: 
> > > "It will rain tomorrow." 
> > > Today(x) & Rain(x+1) 
> > "It will rain in the future" (fiction?) 
> > x in N & Today(x) & EXISTS(y):[ y in N & x<y & Rain(y)] 

[snip childish abuse]
 
> Whats your point now? Looks like a standard translation 
> of temporal logic to me.

[snip]

The point is, for rigorous applications based on past or future events, you really should be using predicate logic, set and probability theories. Classical propositional logic alone may well be insufficient.  In light of this, textbook examples of "real-world" applications of propositional logic should ideally be restricted to statements to the present tense.

Dan

Download my DC Proof 2.0 freeware at http://www.dcproof.com
Visit my Math Blog at http://www.dcproof.wordpress.com

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Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 07:35 -0700
  Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-19 07:51 -0700
    Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 08:32 -0700
      Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 15:08 -0700
        Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-19 19:42 -0700
          Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-19 22:31 -0700
          Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 23:22 -0700
            Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 23:28 -0700
              Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 23:33 -0700
          Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-20 07:59 -0700
            Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-20 08:15 -0700
              Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-20 08:18 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-20 12:28 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-20 12:40 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-20 13:02 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-20 15:33 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-20 20:03 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-20 21:16 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-20 21:39 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-20 23:03 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 00:50 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 06:31 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 08:43 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 08:54 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 09:10 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 09:11 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 09:12 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 09:14 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 09:14 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 09:25 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 09:30 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 09:37 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 09:41 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 10:43 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 11:13 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 11:49 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-21 13:11 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 22:00 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-21 22:12 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 22:27 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-21 22:34 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 02:59 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 03:14 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 03:19 -0700
                Re: Why predictions about the future have no truth value Julio Di Egidio <julio@diegidio.name> - 2023-06-22 03:20 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 04:09 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 04:13 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 04:21 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-22 08:28 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-22 08:59 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-22 13:42 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-24 09:49 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-24 11:14 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 09:30 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 15:34 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-25 16:05 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-25 16:29 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-25 16:34 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 19:29 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 19:32 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-25 21:20 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 22:42 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 00:17 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 00:28 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 00:34 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 00:41 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 09:31 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 10:40 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-26 10:58 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 12:36 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 17:27 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 18:21 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 18:43 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-26 20:32 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-26 21:13 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-26 21:36 -0700
                Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-26 22:14 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 04:15 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 04:27 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 07:55 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 09:49 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 09:57 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 10:25 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 10:39 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 10:48 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 10:57 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 11:11 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 11:20 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 11:24 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 12:05 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 12:18 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 12:26 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 12:33 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 12:53 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 12:55 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 13:02 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 13:12 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 13:35 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 13:45 -0700
                Re: Why predictions about the future have no truth value Daniel Pehoushek <pehoushek1@gmail.com> - 2023-06-27 14:10 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 14:16 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 14:39 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 15:48 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-27 16:02 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-27 16:54 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-28 20:37 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-07-02 15:37 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-07-02 17:49 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-07-03 04:04 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-25 19:16 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 23:40 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-22 23:51 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 00:05 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 08:58 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 09:49 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 10:12 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 10:19 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 10:30 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 11:20 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 13:57 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 14:16 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 14:20 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 14:26 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 14:37 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 14:55 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 15:03 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 15:08 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 15:12 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 15:28 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-23 15:54 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 17:14 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 17:19 -0700
                Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-23 17:29 -0700
                Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-20 15:22 -0700
            Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-20 11:37 -0700

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