sci.logic
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Re: How big is infinity?

Subject: Re: How big is infinity?
From: Virgil
Date: Thu, 31 Aug 2006 12:42:38 -0600
Newsgroups: sci.logic, sci.math
In article <9b9ef2l7bmussmc3r2nq654bf4mf1t5av8@xxxxxxx>,
 Lester Zick <dontbother@xxxxxxxxxxx> wrote:

> On Wed, 30 Aug 2006 22:17:03 -0600, Virgil <virgil@xxxxxxxxxxx> wrote:
> 
> >In article <gtpbf2l4ce435598ls17d6n1f2shq4a2aj@xxxxxxx>,
> > Lester Zick <dontbother@xxxxxxxxxxx> wrote:
> >
> >> On Tue, 29 Aug 2006 22:32:52 -0600, Virgil <virgil@xxxxxxxxxxx> 
> >> wrote:
> >
> >
> >> >So Zick must be declaring that commands are to be either true or 
> >> >false.
> >> >
> >> >Is "Go jump in the lake!" true or false, Zick?
> >> 
> >> If you did it it would be true. If I did it it would be false.
> >
> >I have already issued the 'statement', now Zick say that its truth is 
> >conditional on something that has not yet occurred. 
> 
> So is the statement true or false?

http://en.wikipedia.org/wiki/Sentence_%28linguistics%29#Classification_by
_purpose

Sentences can also be classified based on their purpose:
A declarative sentence or declaration, the most common type, commonly 
makes a statement: I am going home.
An interrogative sentence or question is commonly used to request 
information  When are you going to work?  but sometimes not; see 
rhetorical question.
An exclamatory sentence or exclamation is generally a more emphatic form 
of statement: What a wonderful day this is!
An imperative sentence or command is ordinarily used to make a demand or 
request: Go do your homework.

Only declarative sentences can be declared true or false.

So the proper response to Zick's question is that the question assumes a 
condition contrary to fact.

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