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| Date | 2023-06-17 03:32 -0700 |
| References | <b095d340-106d-48b9-989c-aaf15cc6224an@googlegroups.com> <919a20ef-7c37-4671-8c67-b2dd5aa27e49n@googlegroups.com> |
| Message-ID | <9624d5b1-ca99-4e13-b89f-22bb22be5862n@googlegroups.com> (permalink) |
| Subject | Re: Why predictions about the future have no truth value |
| From | Julio Di Egidio <julio@diegidio.name> |
On Saturday, 17 June 2023 at 12:21:33 UTC+2, Julio Di Egidio wrote: > On Friday, 16 June 2023 at 07:05:34 UTC+2, Dan Christensen wrote: > > It seems "intuitively obvious" to me that classical propositional logic 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> > > Comments? > If "Brian will be in his study tomorrow’" is *stated*, besides that one should rather understand "Brian will be in his study tomorrow modulo any intervening accidents", the truth of the statement is *relative to the present knowledge* and nothing else. That is, the truth of a *proposition* indeed is about the present, it's LOGIC that you guys have no clue about. To be clear, "knowledge" goes with that example and how one would phrase it in common speech, but it's not at all exhaustive: it's the whole (present!) "state of affairs", to say it a la Wittgenstein: the point is, truth is (of) now--and the responsibility for truth, which is what is really at stake... Julio
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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 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 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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