"Stephen Harris"  wrote 

> > > Is there such a thing as non-active selection?  Explain.
> >
> 
> Have you watched how they pick lottery tickets. A bunch
> of balls with numbers on them randomly mix and at intervals
> an opening allows one numbered ball to escape until six or
> seven such balls have been accumulated.

Does this not involve activity?



Jim
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 * RgateImp.MoonDog.BBS at 7/31/03 3:23:09 PM