I’m also a bit confused about your definition of C.
Suppose we know the criterion of truth, C; that is, there exists (not counterfactually but actually as in anyone can observe this thing) a procedure/algorithm to assess if any given statement is true.
Suppose there exists a special magic eight ball that shows the word “true” or “false” when you shake it after making any statement, and that it always gives the correct answer.
Would you agree that use of this special magic eight ball represents a “procedure/algorithm to assess if any given statement is true”, and so anyone who knows how to use the magic eight ball knows the criterion of truth?
If so, I don’t see how you get from there to saying that a rock must be convinced, or really that anyone must therefore be convinced of anything.
Just because there exists a procedure for assessing truth (absolutely correctly), doesn’t therefore mean that everyone uses that procedure, right?
Suppose that Alice has never seen nor heard of the magic eight ball, and does not know it exists. Just the fact that it exists doesn’t imply anything about her state of mind, does it?
Was there supposed to be some part of the definition of C that my magic eight ball story doesn’t capture, which implies that it represents a universally compelling argument?
Just being able to give the correct answer to any yes/no question does not seem like it’s enough to be universally compelling.
EDIT: If the hypothetical was not A) “there exists… a procedure to (correctly) assess if any given statement is true”, but rather B) “every mind has access to and in fact uses a procedure that correctly assesses if any given statement is true”, then I would agree that the hypothetical implies universally compelling arguments.
Do you mean to be supposing B rather than A when you talk about the hypothetical criterion of truth?
I’m also a bit confused about your definition of C.
Suppose there exists a special magic eight ball that shows the word “true” or “false” when you shake it after making any statement, and that it always gives the correct answer.
Would you agree that use of this special magic eight ball represents a “procedure/algorithm to assess if any given statement is true”, and so anyone who knows how to use the magic eight ball knows the criterion of truth?
If so, I don’t see how you get from there to saying that a rock must be convinced, or really that anyone must therefore be convinced of anything.
Just because there exists a procedure for assessing truth (absolutely correctly), doesn’t therefore mean that everyone uses that procedure, right?
Suppose that Alice has never seen nor heard of the magic eight ball, and does not know it exists. Just the fact that it exists doesn’t imply anything about her state of mind, does it?
Was there supposed to be some part of the definition of C that my magic eight ball story doesn’t capture, which implies that it represents a universally compelling argument?
Just being able to give the correct answer to any yes/no question does not seem like it’s enough to be universally compelling.
EDIT: If the hypothetical was not A) “there exists… a procedure to (correctly) assess if any given statement is true”, but rather B) “every mind has access to and in fact uses a procedure that correctly assesses if any given statement is true”, then I would agree that the hypothetical implies universally compelling arguments.
Do you mean to be supposing B rather than A when you talk about the hypothetical criterion of truth?