Re: Generating Random Numbers with Normal Distribution
| From: | Jochem Maas | Date: | Tue, 11 Dec 2007 00:55:46 +0000 |
| Subject: | Re: Generating Random Numbers with Normal Distribution | ||
| References: | 1 2 3 4 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-265647@lists.php.net to get a copy of this message | ||
Rob your sick ;-)
this thread made me think about the Observer Effect - probably the randomness is
just in your/my/his/her head :-P
or we're all green men or something.
Robert Cummings wrote:
> On Mon, 2007-12-10 at 17:45 -0500, Daniel Brown wrote:
>> On Dec 10, 2007 5:39 PM, Robert Cummings <robert@interjinn.com> wrote:
>>> On Mon, 2007-12-10 at 16:32 -0600, Jay Blanchard wrote:
>>>> [snip]
>>>>> Without order there cannot be randomness.
>>>> But is the reverse true?
>>>> [/snip]
>>> But disorder isn't necessarily random.
>> Unless you get into Shannon entropy, but that still doesn't
>> disprove your statement.
>
> Shannon entropy (from what I briefly scanned) is based upon the
> presumption of random. As such you can't use it to argue a case for the
> existence of true random. Entropy is merely the tendency of an ordered
> state to move toward disorder. It also doesn't in any way make an
> argument for random. For instance, let's say I order 10 peas into a line
> in a straw. I then shoot them all at a target which they more or less
> hit and scatter. The peas are now in disorder, but their places of rest
> (presuming we're not in outer space ;) would be the logical outcome of
> the application of the laws of physics with respect to mass, force,
> angle, gravity, etc. They aren't randomly lying on the ground. Although,
> one might casually choose their resting locations to derive a
> pseudo-random number since it is unlikely one could easily guess the
> precise landing location of each pea.
>
> Anyways... this was just a fun sidetrack like we used to get our
> teachers on when we were kids :)
>
> Cheers,
> Rob.