# Monthly Archives: November 2017

## Peirce’s 1903 Lowell Lectures • Comment 9

Re: Peirce List • John Sowa JFS: In 1911, Peirce clarified [the] issues by using two distinct terms:  ‘the universe’ and ‘a sheet of paper’.  The sheet is no longer identified with the universe, and there is no reason why one couldn’t or … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 8

Cf: Laws Of Form Discussion • JA Re: Laws Of Form Discussion • JB Re: Peirce List Discussion • JA Many aspects of Peirce’s alpha graphs can be clarified by seeing how they relate to the corresponding Venn diagrams. In … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 7

Cf: Laws Of Form Discussion • JA Re: Peirce List Discussion • JA I’ll go ahead and copy out the first part of the article on Logical Implication, as I find I am still pleased with all I was able … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 6

Cf: Laws Of Form Discussion • JA Continuing discussion of the conditional form, as expressed in Peirce’s logical graphs under the existential interpretation, incited me to cite one of my own essays on the subject. Re: Peirce List Discussions • … Continue reading

## The Difference That Makes A Difference That Peirce Makes : 19

Re: Peirce List Discussion • John Sowa Peirce uses the word “formal” in a sense that gives it normative force.  It is this sense in which he defines logic as formal semiotic. But taking “formal” in a normative sense weighs against … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 5

The World of Ā Cf: Laws Of Form Discussion • JA The relationship between classical and non-classical logic is a topic that comes up from time to time in these discussions.  Inquiry into it tends to take a different tack … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 4

Cf: Laws Of Form Discussion • JA A couple of comments in response to questions about the relationship between Spencer Brown’s Laws of Form and the broader scope of Peirce’s Logical Graphs. Re: Peirce List Discussion • HR George Spencer Brown … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 3

Cf: Laws Of Form Discussion • JA Peirce’s use of the “scroll” as a graphical syntax for implication continued to raise many questions at this point in the Peirce List reading.  I think a lot of what bothers people has … Continue reading

## Peirce’s 1903 Lowell Lectures • Comment 2

How Logic Got Its Blots Cf: Laws Of Form Discussion • JA Taking positive implication as a basic construct, as Peirce does in the lectures at hand, one has to find a way to rationalize the introduction of negative concepts, … Continue reading

## Pragmatic Traction • 7

Re: Peirce List • John Sowa It’s good to remember that observation, perception itself, has an abductive character in Peirce’s analysis and induction for him is more a final testing than initial conception stage.  Yes, it’s wheels upon wheels but … Continue reading