Re: Is wittgensteins colour exclusion problem formalizable?

On Feb 20, 10:57 am, "John Jones" <jonescard...@xxxxxxx> wrote:
On Feb 19, 10:46?pm, "translogi" <wilem...@xxxxxxxxxxxxxx> wrote:





On Feb 19, 2:22 pm, "John Jones" <jonescard...@xxxxxxx> wrote:

- Show quoted text -

I went to the opticians two years ago. The optician put some lens on
me and asked me to look at the object in the distance. I did. I saw
two colours, white and green, falling in exactly the same spot. I
could distinguish both yet they appeared as one.

The question is, why can't logic deal with this sort of revelation
without necessarily appealing to empirical evidence?-

The problem is exactly the opposite.
How to assure that a point cannot have two colours.

Still wondering what colour the exact spot had. light green?
if you could distiguish them how could they be at the same place?
saw you one colour with right eye the other colour ?with your left
eye?

then it was probably a coordination error.
greetings

The point or spot that the optician pointed to presented TWO colours,
not one mixed colour. It was both distinctly pure green and distinctly
pure white and these colours were NOT mixed. The point I saw was
"visually" a point. It's two-colour nature arose because of binocular
vision. The green and white point was a single visual object - it
occured at the same point in my visual field.

So now you must define an object without a visual component. But how
can you do that without getting rid of the colour (visual) example?

What then are the limitations placed on logics' claim to be a guide in
determining the outcome of new scenario's if logic cannot anticipate
new scenario's or revelations?

Aha it becomes clear (a bit)

The point I saw was "visually" a point. It's two-colour nature arose
because of binocular vision. The green and white point was a single
visual object - it occured at the same point in my visual field.
<<<
it were two points (one for each eye) that your mind imagined to be at
the same position (in space)
It is sad that your optician used white and green, and not opposing
colours (red and green, bleu and orange) that would have given a more
interesting effect, i think.
It was no "real" object.
I gathered that already from its size.
You were just subjected to a virtual reality experiment.


So now you must define an object without a visual component. But how
can you do that without getting rid of the colour (visual) example?
<<<
some non visual examples :
an object cannot be hard and soft (hairy and bald / hot and cold ) al
over at the same time.
An object cannot weight 10 and 20 KG at the same time.
or visual.

still a bit visual:
a line cannot be shorter and longer than another line (again at the
same time) not such a good example, they are almost contradictionaries
while the others are definitly only contrair.

There are many examples possible.

It is called the colour exclusion problem, because Wittgenstein wrote
(in the tractatus but i don't know the exact lines)

colours are "simple" objects.
simple objects are independent of eachother (so do not exclude
eachother)
--------
Ramsay(?) concluded from this: objects can have two colours.( all
over)
but in reality (not the virtual one) that is not possible.





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