Re: Objects and Relations

On Feb 14, 6:38 am, Bob Badour <bbad..._at_pei.sympatico.ca> wrote:
> JOG wrote:
>
> > 1) Lego blocks are /not/ the same. They always have a different
> > location attribute.
> > 2) Hence their x,y,z position attribute always identifies them.
> > 3) However this identifer is very hard to record and keep track of,
> > even though it exists.
>
> To amplify, the location might be familiar and perhaps even unique, but
> it is neither simple nor stable.

As an aside, there exist domains where location is stable. GIS systems come to mind, or driving directions software.

Marshall Received on Thu Feb 15 2007 - 11:28:51 CST