# Re: Escaping from the world of 3p Flatland

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On 29 Dec 2012, at 07:21, Russell Standish wrote:```
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```On Fri, Dec 28, 2012 at 08:29:52AM -0500, Roger Clough wrote:
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```Hi Russell Standish

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2p should be a necessary part of comp, espcially if it uses synthetic logic.
```It doesn't seem to be needed for deductive logic, however.

The following equivalences should hold between comp
and Peirce's logical categories:

3p = Thirdness or III
2p = Secondness or II
1p = Firstness or I.

Comp seems to only use analytic or deductive logic,
while Peirce's categories are epistemological (synthetic
logic) categories, in which secondness is an integral part.
So .

Here's what Peirce has to say about his categorioes:

http://www.helsinki.fi/science/commens/terms/secondness.html

"Firstness is the mode of being of that which is such as it is,
positively and without reference to anything else.

Secondness is the mode of being of that which is such as it is,
with respect to a second but regardless of any third.

Thirdness is the mode of being of that which is such as it is,
in bringing a second and third into relation to each other."
(A Letter to Lady Welby, CP 8.328, 1904)"

```
```
Thanks for the definition, but how does that relate to 1p and 3p? I
cannot see anything in the definitions of firstness and thirdness that
relate to subjectivity and objectivity.

As I said before, I do not even know what 2p could be.
```
```

3p is when we agree that the coffee is too hot.
1p is when we find it tastes very bad.
2p is when your wife ask you to clean the coffee machine.

:)

Bruno

```
```

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Prof Russell Standish                  Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics      hpco...@hpcoders.com.au
University of New South Wales          http://www.hpcoders.com.au
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