[lit-ideas] Re: Hume's Missing Shade of Blue
- From: Jlsperanza@xxxxxxx
- To: lit-ideas@xxxxxxxxxxxxx
- Date: Thu, 2 Jul 2009 14:02:52 EDT
Okay, so now our resident Bremen-children having W. O. -- Russian
philosopher -- says it's grue.
In a message dated 7/1/2009 10:12:38 P.M. Eastern Daylight Time,
rpaul@xxxxxxxx writes:
>Hume's words are deceiving. There is no _single_ shade of blue that is
>the missing shade. Any shade of blue may be missing from a color chart
>that ranges from the darkest to the lightest shade, so any shade may
>turn out to be a missing shade: there will be a long disjunctive list of
>'shades,' and whether a certain one is 'missing' is in the eye and the
>imagination of the beholder.
>So, there cannot be a missing shade of blue until one has found it to be
>missing. Even Mr. Trogge cannot tell from looking at his prize garment
>if it's one of the missing ones, let alone _the_ missing one. Only by
>examining Hume's original chart, which is in the Mutton archives, can
>this be known.
>How to get out of this predicament is a second-order philosophical
>problem; but not for everyone.
I see.
Yes, I await with anticipation.
I hope he likes it anyway, missing or not.
I see Hume was slightly confused in parts.
I for one, cannot think that one person SHOULD HAVE seen all shades of
blue. They (i.e. the shades of blue) as the wiki entry notes, are possibly
INFINITE, since (as Fogelin notes) it is a continuum. And surely I cannot have
an INFINITE number of impressions.
Nor can Herr Trogge.
---
I think Hume was so _scared_ about this concession -- that an idea may not
derive from sensory input -- that he wanted to minimise it by talking of
'shade' of _blue_.
Now, consider the way Geary learned 'blue'.
"SKY BLUE"
"Yes, Michael, the sky is blue", replied his mother.
"CHINA BLUE"
"Yes, the china is Dresden blue; very well Michael", replied his
grandmother.
"I'm blue" -- B. B. King.
"Very well, B. B. King", said Young Michael.
We _assume_ the spectrum Geary _saw_ includes both light- and deep-shades
of blue and medium blue in between.
Should we assume that Geary has seen ALL (infinite) shades of blue? Surely
not! (Only Berkeley's GOD could have perceived that). So there have to be A
FEW (maybe an infinite number) of shades of blue that Geary is unware of.
There may be a whole new colour that he has never perceived in Memphis.
When I studied the Birds of Paradise, for example, -- in the Museum of La
Plata --, I noticed that some shades of blue were not found in La Pampa
birds.
Hume also supposes that we have genial memories. Surely Geary may have
FORGOTTEN about a shade of blue. So, to assume that, when exposed to the shade
of blue, Geary will retrieve a remembered impression seems optimistic.
Consider apples and cardinals.
Surely I have an idea of 7,689,878 apples. Although I do not have an
_impression_ of that.
Geary and Hume and McEvoy and Kant will say that cardinals are _synthetic a
priori_ but as a Millian I disagree.
And what's sauce for the cardinals, should be sauce for other birds, too.
------
Later,
J. L. Speranza
Buenos Aires, Argentina
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