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| Date | 2023-06-16 08:26 -0700 |
| References | <b095d340-106d-48b9-989c-aaf15cc6224an@googlegroups.com> <2d934ff9-c691-44f1-9fc0-51f2038966e6n@googlegroups.com> |
| Message-ID | <3568167a-f971-4e41-9db0-8ff978d2b7e3n@googlegroups.com> (permalink) |
| Subject | Re: Why predictions about the future have no truth value |
| From | Dan Christensen <Dan_Christensen@sympatico.ca> |
On Friday, June 16, 2023 at 5:48:55 AM UTC-4, Mild Shock wrote: > Dan Christensen schrieb am Freitag, 16. Juni 2023 um 07:05:34 UTC+2: > > It seems "intuitively obvious" to me that classical propositional logic <------------ Please note > > is applicable to statements that ARE (present tense) unambiguously true or false IN THE PRESENT. > > > > As to why it is not applicable to predictions of the future, Mark Thakkar, in his “Logic of the Future” makes an interesting point: > > > > "It is now commonplace to treat statements about the future as logically on a par with factual claims about the present and the past.... > > > > “My principal argument for the claim that statements about the future have no truth-values is that otherwise they would have the standard entailments of propositional logic. For if ‘Brian will be in his study tomorrow’ is true, then it is true no matter what else is true.” > > > > https://www.st-andrews.ac.uk/~mnat/files/future.pdf > > > You are not aware that there is something like > modal logic, arent you? How many modal sentences > that involve a future modal operator are analytically true? > [snip] Please note that I am talking about CLASSICAL PROPOSITIONAL LOGIC. Can you comment on Mark Thakkar's analysis? I think it neatly confirms my intuition that, in classical propositional logic anyway, we cannot legitimately attach a truth value to any prediction of the future. 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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Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-15 22:05 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 02:48 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 03:09 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 04:45 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-16 08:26 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 15:36 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 15:48 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-16 16:10 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-16 19:18 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-16 19:56 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-17 04:53 -0400
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 04:59 -0700
Re: Why predictions about the future have no truth value Julio Di Egidio <julio@diegidio.name> - 2023-06-17 05:04 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-17 09:01 -0400
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 06:22 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 06:53 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 06:57 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 06:59 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 07:04 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 07:15 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 08:06 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 08:12 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 08:17 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 08:21 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-17 08:36 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 08:49 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 09:08 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-17 09:33 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-17 09:26 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 09:29 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-17 09:34 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-17 13:23 -0400
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 12:14 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-17 18:01 -0400
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 20:09 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-18 00:58 -0400
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-18 02:23 -0400
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 06:10 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 06:20 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 06:29 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 08:03 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 09:10 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 09:27 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 09:43 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 10:36 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 11:05 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 11:08 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 12:35 -0700
Re: Why predictions about the future have no truth value Mild Shock <janburse@fastmail.fm> - 2023-06-18 23:32 +0200
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 14:42 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 15:09 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:24 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:35 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:40 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:47 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:49 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 15:59 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 16:03 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 18:53 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 01:20 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 01:31 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 01:38 -0700
Re: Why predictions about the future have no truth value Jim Burns <james.g.burns@att.net> - 2023-06-19 11:14 -0400
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-19 06:44 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-19 07:23 -0700
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 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
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-18 15:40 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 12:23 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-17 13:16 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 13:27 -0700
Re: Why predictions about the future have no truth value Ross Finlayson <ross.a.finlayson@gmail.com> - 2023-06-18 11:40 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 11:44 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 11:49 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 12:18 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-18 12:22 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-16 21:22 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 04:02 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 04:11 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 05:28 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 05:30 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 05:43 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-16 14:05 -0700
Re: Why predictions about the future have no truth value Charlie-Boo <shymathguy@gmail.com> - 2023-06-16 16:16 -0700
Re: Why predictions about the future have no truth value Julio Di Egidio <julio@diegidio.name> - 2023-06-17 03:21 -0700
Re: Why predictions about the future have no truth value Julio Di Egidio <julio@diegidio.name> - 2023-06-17 03:32 -0700
Re: Why predictions about the future have no truth value Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-17 05:03 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 05:08 -0700
Re: Why predictions about the future have no truth value Julio Di Egidio <julio@diegidio.name> - 2023-06-17 05:11 -0700
Re: Why predictions about the future have no truth value Mild Shock <bursejan@gmail.com> - 2023-06-17 05:20 -0700
Re: Why predictions about the future have no truth value PLO olcott <polcott2@gmail.com> - 2023-06-17 15:39 -0500
Re: Why predictions about the future have no truth value Jeffrey Rubard <jeffreydanielrubard@gmail.com> - 2023-06-17 13:53 -0700
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