Re: Perl 'Expert' Quiz-of-the-Week #18

On Fri, Jul 02, 2004 at 11:05:28AM +0000, Ton Hospel wrote:
> In article <20040702061025.GC72466-dNnkglbcI8AYkl5+HhvCNA@xxxxxxxxxxxxxxxx>,
>       Ronald J Kimball <rjk-Sv9uFpfxDRWsTnJN9+BGXg@xxxxxxxxxxxxxxxx> writes:
> > "All X are Y" implies "Some X are Y" and "Some Y are X".
> 
> It doesn't actually unless you know there is at least one X.

Did you bother to read the example?

   > All dogs are mammals.
   OK.

   > Are any mammals dogs?
   Yes, some mammals are dogs.


Ronald