Thursday, March 27, 2014

Schoolyard Ethics

Obama responds to Putin's tu quoque with "but I'm not as bad as you":

http://www.commondreams.org/headline/2014/03/26-7


Saturday, March 22, 2014

Last Night at Luthier's

Thanks to all those who came out last night to hear us play!


Friday, March 21, 2014

Hope Street Quartet at Luthier's Co-op

Our quartet will be playing the opening set of "jazz night" at Luthier's Co-op, Cottage Street, Easthampton, MA this evening, March 21, at 7 pm.

DKJ, piano
Evan Aird, guitar
Mike Thorn, bass
Nate Thorn, drums

Wednesday, February 12, 2014

Wednesday, November 20, 2013

(FC) Thinking About Apples

Constructivism v. Realism
The Problem of Unconceptualized Apples

[T]he unanswerable question whether, or to what extent, any picture our senses "convey" might correspond to the "objective" reality is still today the crux of all theory of knowledge. Sextus used, among other things, an apple as an example. To our senses it appears smooth, scented, sweet, and yellow -- but it is far from self-evident that the real apple possesses these properties, just as it is not at all obvious that it does not possess other properties as well, properties that are simply not perceived by our senses. The question is unanswerable, because no matter what we do, we can check our perceptions only by means of other perceptions, but never with the apple as it might be before we perceive it.
----- E. von Glasersfeld, “An Introduction to Radical Constructivism”

Here's my best reconstruction of Ernst's rejection of realism:

1. All concepts are in the mind

2. All concepts are conceptualized

3. All concepts are concepts-of-some-x

4. All concepts-of-some-x are in the mind (from 1)

5. There can be no unconceptualized concepts-of-some-x (from 2)

6. All concepts of apples are concepts-of-some-x (from 3)

7. There can be no unconceptualized concepts of apples (from 5 and 6)

8. There can be no concept of an apple that is not a concept (truism)

9. The referent of the realist’s phrase “unconceptualized apple” is not a concept

10. There can be no concepts of unconceptualized apples (from 8 and 9) (von G.: “…we cannot possibly conceive of an unexperienced world”)

11. Metaphysical realism (MR) involves concepts of unconceptualized apples. (By definition; here’s a typical realist concept: “if every concept-user were suddenly to disappear, apples – unconceptualized and unconceptualizable – would still exist.”)

12. MR is wrong and von Glasersfeld’s constructivism right (from 10 and 11)