[MD] Putnam on Is-Ought and Truth

[Horse]

Avast me hearty!

It doesn't work like that though does it.
What you're describing is a two input AND gate and the output will be 
true if both inputs are true.

If it is true that X > Y
and
If it is true that Y > Z
then
It is true that X > Z
else
False

Otherwise your Conclusion is not based on the Premisseseseses!
10 may be greater than 8 but this is not a conclusion based on the premisses

:)

Horse


On 29/04/2010 05:26, craigerb at comcast.net wrote:
> [Horse]
>    
>> P1) If [it is true that] Blackbeard is a pirate
>> And
>> P2) If [it is true that] All pirates are murderers
>> then
>> C1) Blackbeard ought to be a murderer
>> But as not all pirates are murderers P2 is not true so conclusion is false.
>>      
> Arggggh, back to Logic 1 with ye, matey.
> A valid argument with 1 true premise&  1 false premise, does not necessarily
> have a false conclusion:
> i)      10>  5
> ii)       5>  8
> iii) :. 10>  8
> Craig  
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