Re: Natural keys vs Aritficial Keys
Date: Tue, 19 May 2009 10:59:35 GMT
Message-ID: <riwQl.2259$5F2.419_at_nwrddc01.gnilink.net>
"David BL" <davidbl_at_iinet.net.au> wrote in message
news:368e6bbc-8b2d-465a-9de7-f99c2f3ea029_at_i28g2000prd.googlegroups.com...
> On May 19, 11:48 am, paul c <toledobythe..._at_oohay.ac> wrote:
>> David BL wrote:
>> > On May 19, 1:18 am, paul c <toledobythe..._at_oohay.ac> wrote:
>> >> Most people I know don't abstract at all.
>>
>> > Do you work in a morgue?
>>
>> I'm staring to think so.
>
> LOL. Anyway, my point was that all conscious humans, even
> particularly challenged ones utilise abstractions in one form or
> another.
>
> I recall reading about an experiment on mice that demonstrated that
> they could at some level understand the abstract concept of numbers by
> counting the objects presented on a card in order to avoid a nasty
> electric shock by conditionally jumping over a barrier. To be judged
> successful the mouse had to be able to count objects it had never seen
> before. It was claimed that mice can count up to 3.