Re: Natural keys vs Aritficial Keys

"Walter Mitty" <wamitty_at_verizon.net> wrote:

>"David BL" <davidbl_at_iinet.net.au> wrote in message

[snip]

>> 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.
>
>In a different experiment, they showed that crows can count up to 7.

     2-bit unsigned and 3-bit unsigned.

Sincerely,

Gene Wirchenko

Computerese Irregular Verb Conjugation:

     I have preferences.
     You have biases.
     He/She has prejudices.