C++0x Concepts - Dead?

[Walter Bright]

Ary Borenszweig wrote:
> Suppose you implement partial ordering with template constraints and 
> drop the others. What things you couldn't do? (I need an example because 
> I can't see it).

How could I do partial ordering if one constraint expression accepts 
only "odd" integers? Remember that partial ordering is not done with the 
specific argument values, but with the general parameter ones.