On Thu, 6 Dec 2007, Bill Page wrote:

| 
| On 12/5/07, Gabriel Dos Reis wrote:
| >
| > On Wed, 5 Dec 2007, Bill Page wrote:
| >
| > | the screen it is 2-dimensional. Unless I have a severe problem
| > | with my vision (tunnel vision) I see this all at once as simple
| > | two dimensional geometrical arrangement (a "curve" in 2-d
| > | space):
| > |
| > | x
| > |   x
| > |   x
| > |     x
| > |       x
| > |   x
| >
| > when I read your mail from a device that displays your
| > message one line at a time, is it still 2-dimensional?
| 
| No. I do not think the message would be comprehensible when it was
| read one line at a time any more than it would be when read one column
| at a time.

I did not ask the question of readong one column at a time -- thanks
for mentioning it.  But for the moment, let's just stick to one line
at a time -- I'm dead serious (because is a realistic situation).

| Neither of these are "2-dimensional" unless one of the
| dimensions you admit is time.

You seem to postulate the 2-dimensional nature.  If it is a postulate,
then there is no discussion to have.  If it is not, then we should be
able to derive that property.  So, all I'm doing is to see whether you
can articulate the chain of logical inference that would lead there.  
So, is it a postulate or something we have hope to arrive to by
logical inference?

| > If yes, why isn't that true for C program source file?
| 
| Removing the distinction between new lines \n (vertical whitespace)
| and spaces (horizontal whitespace) has no effect on the parsing of a C
| program source file.

But, that is not true : see the rules that govern the translation of a
C program.  

-- Gaby

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