2012/12/17 meekerdb <meeke...@verizon.net>

> On 12/17/2012 1:15 PM, Quentin Anciaux wrote:
>
>> ISTM that consistency is the fact that you can't have contradiction.
>>
>
> In some logics you're allowed to have contradictions, but the rules of
> inference don't permit you to prove everything from a contradiction.  I
> think they are then called 'para-consistent'.


Sure, but contrary as what you wrote, consistency is  "A consistent theory
is one that does not contain a contradiction" cf:
http://en.wikipedia.org/wiki/Consistency


 Incompletness that you can't prove every proposition.
>

No, incompleteness is you can't prove every true proposition.


That's what I meant.


>  Which implies there is some measure of 'true' other than 'provable'.
>

What do you mean ? that provable true is truer ?

Quentin

>
> Brent
>
>
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