Marshall wrote:
> 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.
Location is a stable identifier for a point in some space. It is not a
stable identifier for a lego piece.
Received on Thu Feb 15 2007 - 12:16:47 CST
