John, List:
JAS: how would you scribe the graph for "A thinks that B is *possibly *
true"?
JFS: For my recommended version of metalevel EGs, I would first replace the
dotted line of your EG with a solid line. That would express the sentence
"A is thinking the proposition that there exists a B."
Jon,
Every statement about a thought expresses a possibility. Every statement about
a claim, a wish, a fear, etc, expresses a possibility. That is why
metalanguage is a more explicit method for expressing and reasoning about
possibility. Quine said that in the 1960s, and other logicians hav
John, List:
JFS: In both graphs in your note below, the thin line may be read as "that"'
Yes, of course; that is obvious from the syntax of the English sentences
that I translated into those two graphs--although, as I said in that post,
it is a *dotted *line, not a *thin *line.
JFS: But neither
ewis or later variations of it.
John
From: "Jon Alan Schmidt"
Sent: 3/13/24 5:39 PM
To: Peirce-L
Subject: Re: [PEIRCE-L] metalanguage, possibility, WAS: Logical Content of
Graphical Signs (was Higher-Order Logics)
Helmut, List:
Different ki
Helmut, List:
Different kinds of possibility can be addressed with different formal
systems of modal logic--alethic, deontic, doxastic, dynamic, epistemic,
temporal, etc. For example, deontic logic defines possibility as
*permissibility
*and necessity as *obligation*, which is why its
alternativen
List,
I put a new name to this, because I am not inside the discussion, just want to mention a problem I have with the topic. First, there are different types of possibility: Is it not definite but possible about the past or about the future, is it due to limited knowledge or to different optio
