Gary R., list,

This seems to be error-confession month. I've a few new ones of my own now to mention.

As regards _/logica utens/_ and _/logica docens/_, I confused things a bit, for example by asking whether mathematical reasoning IS one or IS the other, rather than asking, on which of them does mathematical reasoning rely.

I also mischaracterized the dependence on _/logica utens/_ in special sciences by attributing it to unfamiliarity with Peirce. There's quite a bit of methodological theory that addresses scientific method, and idioscopic scientists are not entirely unfamiliar with it. Some of it is in statistics (design of experiments, etc.) Really, we all swim in a sea of _/logica utens/_ and occasionally apply (or, more rarely, originate) some _/logica-docens/_ crystallization and enrichment of some of it. I suspect that Peirce's methodeutic will gain increased attention, partly because of the Internet.

As regards Kees's view of Peirce's view of pragamatism's classificational place (in methodeutic a.k.a. speculative rhetoric), you and he have well covered it now in other posts.

You wrote,

   [GR] > It is my sense that this "methodeutically based enrichment of
   the presuppostional conception" suggests the way in which once
   logica docens, and especially methodeutic, is on a solid footing,
   that there is good reason to go back to what was early presupposed,
   to go back also to the sciences preceding logic as semeiotic, etc.
   and now consider them from the standpoint of the findings and the
   methods of a developed and purified formal logic in Peirce's broad
   sense. Should the pre-logical sciences never benefit from the
   advances of formal logic? Of course they should!

In the sense in which you probably mean that, yes. I don't think that they get a 'do-over' in the Peircean system. They get applied in examples in ways that help flesh them out. Phaneroscopy can't take principles from probability theory or mathematical logic, but only from pure maths, e.g., measure theory and order theory. I find it quite difficult to think of phanerscopic issues without applying ideas as principles such as universality from logical quantification, difficult because the logical structure of such ideas seems pertinent to me. It's one thing to think that all phenomena are such-and-such, it's another to address generality, 'all-ness' etc., as a phenomenon.

   [GR] > [...] I'm not certain what you mean by "clarified at or near
   his logic's start" in what immediately follows in your post. Do you
   mean in logical grammar? [....]

       [BU] >> [....] But the presupposition of truth as the
       predestinate end of sufficient inquiry, as clarified at or near
       his logic's start [....]

He discusses the presuppositions of reasoning in various places. In the Carnegie application (1902), he discusses it at or near the start of his memoirs on logic. THEN he gets into stechiology (a.k.a. speculative grammar, signs, objects, interpretants, and their classifications). So it's quite as if logic begins on a general level, covering presuppositions, belief, doubt, etc., then gets into the three subdivisions of logic. Then in 1911 instead of stechiology or speculative grammar, he puts a division called 'analytic' first in logic, and it covers topics such as belief and doubt. Does this include classification of signs? Who knows. The passage is in a 1911 letter (draft or not, I don't know) to J. H. Kehler, printed in _The New Elements of Mathematics_ v.3, p. 207. Peirce wrote the following which I found at the _Commens Dictionary of Peirce's Terms_ under "Analytic" http://www.helsinki.fi/science/commens/terms/analytic.html :

   [CSP] I have now sketched my doctrine of Logical Critic, skipping a
   good deal. I recognize two other parts of Logic. One which may be
   called Analytic examines the nature of thought, not psychologically
   but simply to define what it is to doubt, to believe, to learn,
   etc., and then to base critic on these definitions is my real
   method, though in this letter I have taken the third branch of
   logic, Methodeutic, which shows how to conduct an inquiry. This is
   what the greater part of my life has been devoted to, though I base
   it upon Critic.

Best, Ben

On 4/23/2014 5:47 PM, Gary Richmond wrote:

Ben, list,

I am tending to agree with much that you wrote, Ben, but would like you to clarify a point or two if possible.

You wrote:

        In practice, this _/logica utens/_ aspect occurs not only
    prior to formal logic but afterward, in the special sciences too,
    since such scientists tend not to be too familiar with Peirce's
    formal methodeutic theory

No doubt it is the case that many working in the special sciences aren't familiar with Peirce's methodeutic and use a logica utens in their work. But I think the point for Peirce would be that they ought to familiarize themselves better with logic, with logica docens, and apply it so that errors might be avoided,, just as he intended logic as semeiotic to clarify concepts in the interest of avoiding serious errors in metaphysics.

You continued, regarding Peirce's methodeutic that this "is where pragmatism and it[s] maxim belong (I think). In the Carnegie application, Peirce places pragmatism even further along in methodeutic than I would have thought."

I'll have to take a look at the Carnegie application again soon. As mentioned earlier, Kees' would seem to place the PM in theoretical grammar, and offers an interesting semiosic analogy to make his point. While I'm still reflecting on all of this, at the moment you and I seem to agree that the PM is best placed late in methodeutic. Still, Kees' argument for placing in in grammar is thought-provoking and needs serious consideration, in my opinion.

You continued with a discussion of the presuppositional conception of truth.

        Peirce holds in various writings that reasoning presupposes
    certain things about truth and the real. But the reasoner at that
    stage hardly needs to know the THEORY of pragmatism, three grades
    of clearness, etc. However, the pragmatic clarification of truth
    does seem to involve some methodeutically based enrichment of the
    presuppositional conception, so one can speak of a 'pragmatic
    conception of truth'.

It is my sense that this "methodeutically based enrichment of the presuppostional conception" suggests the way in which once logica docens, and especially methodeutic, is on a solid footing, that there is good reason to go back to what was early presupposed, to go back also to the sciences preceding logic as semeiotic, etc. and now consider them from the standpoint of the findings and the methods of a developed and purified formal logic in Peirce's broad sense. Should the pre-logical sciences never benefit from the advances of formal logic? Of course they should!

You continued:

        And even with reality defined presuppositionally, well before
    methodeutic, it is not in methodeutic or logic at all, but
    afterward in metaphysics, that Peirce treats of just what reality
    so defined amounts to; his theory of truth and reality leads to
    modal realism and the nontrivial consequence of the reality of
    indeterminacy in the universe.

Indeed, Peirce's theory of truth and reality eventually lead him to an /extreme/ modal realism and tychism. But as you go on to say, his metaphysics of reality can be see as pragmatistic, and I would think exactly because presuppositional notions of truth and reality /will/ be clarified by employing the PM. I think we're in agreement here, but I'm not certain what you mean by "clarified at or near his logic's start" in what immediately follows in your post. Do you mean in logical grammar? It would be helpful if you would clarify or expand upon the following:

        Pragmatism has metaphysical consequences, in Peirce's system,
    and one can call his metaphysics of reality 'pragmatistic'. But
    the presupposition of truth as the predestinate end of sufficient
    inquiry, as clarified at or near his logic's start, is something
    of which pragmatism - a theory of the clarification of ideas - is
    itself a theoretical application.

At the moment I'm not at all clear as to what you're saying in the passage above. You continued:

        As regards _/logica utens/_ in phaneroscopy, in Peirce's
    classification there's nothing to stop _/logica utens/_, including
    an informal version of pragmatism, an eye to conceivable practical
    implications, from being involved.

Of course I agree. This was a point I occasionally tried to make with Joe Ransdell, but I don't think with much success. It seemed to me then and seems to me now that formal semeiotic is not at first necessary--nor at first even possible, not at least in the fullest, most developed sense--for the sciences preceding it. I would only add now, as I mentioned above, that there is no reason why, once logic as semeiotic, and most especially, methodeutic, is developed, it would not be possible to apply its findings and methods to those earlier sciences. I take it that we're in agreement on this.

You concluded:

        But if mathematical reasoning is _/deductiva logica utens/_,
    then _/logica utens/_ is not always vague and informal in every
    sense. If on the other hand mathematical reasoning is not _/logica
    utens/_, but still not _/logica docens/_ (which Peirce places as
    later, in philosophy), then what is it?

Good question. Is there in the logic of mathematics--that is, in that quite small and 'simple' part of theoretical mathematics--anything suggesting that deduction is so rationally fundamental (or simple) as to require no formal logical support? Of course there is also that part of mathematics which requires a kind of abductiva logica utens as well, and this last involves an insight of Peirce's which broadened and deepened his father's definition of mathematics as "the science which draws necessary conclusions." And further,as Kees might add, working mathematicians /will/ talk about, for the purposes of clarifying, conceptions involved in/associate with their work.

Best,

Gary

*Gary Richmond
Philosophy and Critical Thinking
Communication Studies
LaGuardia College of the City University of New York *

On Wed, Apr 23, 2014 at 3:14 PM, Benjamin Udell  wrote:

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