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| Date | 2023-06-15 21:53 -0700 |
| Message-ID | <7b961f07-ffe0-4fdf-a50a-7300bf70d282n@googlegroups.com> (permalink) |
| Subject | Why statements about the future have no truth-values |
| From | Dan Christensen <Dan_Christensen@sympatico.ca> |
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 interested 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? 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 statements about the future have no truth-values Dan Christensen <Dan_Christensen@sympatico.ca> - 2023-06-15 21:53 -0700
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