[MD] Putnam on Is-Ought and Truth

[craigerb at comcast.net]

[Steve] 
> One of these usually unstated ought-premises 
> that accompanies any set of is-premises in an inquiry is that one 
> under discussion which says that we ought not derive any new "oughts" 
> by considering only a set of is-premises. 

This is never a premise--that would be begging the question. 

[Steve] 
> we also could never derive a 
> new "is" from a set of is-premises alone. 

Nothing is easier: 
Socrates is a man. 
A man is mortal. 
:. Socrates is mortal. 
Craig