Re: [FRIAM] Why true random?

2007-07-22 Thread Phil Henshaw
Not sure really what the inputs always used, but I think these Self-org
 Self-adapt algorithms the SASO engineers were playing with didn't
always use random generators to produce the systemic effects they were
getting.   Obviously all input effects all output in some sort of way,
but it was the outcomes that would come from the whole gamete of
unspecified inputs that seemed to be the 'phase space profile' they were
most interested in.   
 
Many of the papers were on how the inputs could seriously 'misbehave'
and still not screw up the control schemes, often discussed in terms of
'malicious agent' concepts, of which the real net has plenty real
examples! I also found them very receptive to considering not only
what a malicious person would think of doing to defeat someone else's
operating plan, but also the 'malicious creativity' of natural system
emergence as a focus of design contingencies.
 
 

Phil Henshaw   .·´ ¯ `·.
~~~
680 Ft. Washington Ave 
NY NY 10040   
tel: 212-795-4844 
e-mail: [EMAIL PROTECTED]  
explorations: www.synapse9.com http://www.synapse9.com/ 

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Douglas Roberts
Sent: Sunday, July 22, 2007 1:19 AM
To: The Friday Morning Applied Complexity Coffee Group;
[EMAIL PROTECTED]
Subject: Re: [FRIAM] Why true random?


Simulations of stochastic processes also require good RN generators,
especially for simulations of large systems with (I hate to use this
word) emergent behavioral properties.  A bad RN generator will introduce
emergent behavior that will be flavored by a bad random sequences. 


-- 
Doug Roberts, RTI International
[EMAIL PROTECTED]
[EMAIL PROTECTED]
505-455-7333 - Office
505-670-8195 - Cell 



On 7/20/07, Russell Standish [EMAIL PROTECTED] wrote: 

Cryptographic applications require true randomness. If your cipher
used on a pseudo-random number generator, then a cracker discovering
your algorithm and key has broken your code.

I also have a hunch that genuine randomness is needed for open-ended 
evolutionary systems. Here, the evol algorithm is in the position of
the code cracker, and once the code is cracked, the evol algorithm
stops. I had a workshop paper on this in 2004, which has some problems
with it. The concept is controversial, to say the least. 

Cheers

On Sat, Jul 21, 2007 at 10:24:42AM -0600, Peter Lissaman wrote:
 Why is it important (except intellectually) to have true
randomness???  I very well remember the early, good old, bad old, days
of Aerospace, in the 50's, when we were really doing practical
earthshattering things -- like going to the moon -- sans computers!!
The RAND corporation, for whom I consulted, published a typed book (size
of a Manhattan telephone directory) of random numbers  for engineering
application.  Much entertainment was occasioned when, about three months
later, they distributed a list of typos to their original list of
random numbers.  Today I use homemade random numbers alla time for real
problems, specifically the actual response of real flight vehicles in
real atmospheric turbulence.  Flight tests support  analysis, in the
sense that what we predict is not obviously incorrect.  We have never
found it necessary to utilize any more perfectly random random
sequences! 


 Peter Lissaman, Da Vinci Ventures

 Expertise is not knowing everything, but knowing what to look for.

 1454 Miracerros Loop South, Santa Fe, New Mexico 87505
 TEL: (505) 983-7728 FAX: (505) 983-1694 
 
 FRIAM Applied Complexity Group listserv
 Meets Fridays 9a-11:30 at cafe at St. John's College
 lectures, archives, unsubscribe, maps at http://www.friam.org

--



A/Prof Russell Standish  Phone 0425 253119 (mobile)
Mathematics
UNSW SYDNEY 2052 [EMAIL PROTECTED]
Australiahttp://www.hpcoders.com.au
http://www.hpcoders.com.au 




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Re: [FRIAM] Why true random?

2007-07-22 Thread Roger Frye
I would argue the opposite.  While I agree with Doug that you need good  
RNGs (though not necessarily true RNGs) in order to avoid bias, the  
problem with good pseudo- or true- RNGs is that they have order N^2  
convergence for Monte Carlo simulations.  Quasi-random number generators  
on the other hand (such as multiples of an irrational square root, or a  
Peano tiling) converge in order N.  If you can trust the results, faster  
conergence lets you simulate more.
-Roger

On Sat, 21 Jul 2007 23:18:36 -0600, Douglas Roberts [EMAIL PROTECTED]  
wrote:

 Simulations of stochastic processes also require good RN generators,
 especially for simulations of large systems with (I hate to use this  
 word)
 emergent behavioral properties.  A bad RN generator will introduce  
 emergent
 behavior that will be flavored by a bad random sequences.






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Re: [FRIAM] DISREGARD: math and the mother church

2007-07-22 Thread Russell Standish
On Sun, Jul 22, 2007 at 06:12:58PM -0600, Nicholas Thompson wrote:
 
 So, here is my present understanding of the mathematician's argument for the 
 mean value theorem.  What I dont understand is why it takes three pages of 
 algebra to get there!

I don't know where you get the 3 pages from. My analysis book does it
2 paragraphs of algebra, half a page at most. (That's including all
the necessary lemmas and definitions).

 
 Let us amagine that ab is a bit of a line.  It could be straight, and the 
 argument would still hold, but let us imagine that it is curved curved 
 up, curved down, it does not matter.  Let's imagine that is an inverted U, 
 except that it doesnt have to be a straight up and down inverted U.  In fact, 
 it can be sitting so that somebody wobbled it so that it is, at the instant 
 of being photographed, standing on one leg, about 30 degrees from the 
 verticle.  .  
 
 What does matter is that the line be continuous ALL THE WAY FROM a to B.  No 
 gaps,  not steps.  Imagine that no matter how small the steps you are taking, 
 you can walk along the points of the line from a to b and not get your feet 
 wet, NOT AT ALL -- if of course your shoe size is small enough.  
 
 Now draw a line that connects the bottom of the two legs of the inverted U.  
 As we just said, that line will move off to the right, from a through b and 
 beyond,  at about a thirty degree angle from the horizontal.   Thus the mean 
 slope of the tilted inverted U is 30 degrees, right?
 
 Here is what that means, as I understand it. Every point on the tilted 
 inverted U has a slope, the slope of the line that is just tangent to the U 
 at that point.  Near point a that slope is VERY positive;  near point b, 
 that slope is very negative.  Now, imagine  you set out to walk along the 
 curve from a to b.  If you take tiny enough steps, you MUST step on the 
 point where the slope is the same as the mean slope.   That is what the mean 
 value theorem says.  
 
 But I just got there without any of the algebra usually devoted to that 
 proof.  So the question is,  what is the VALUE of the algebra.  If one can 
 estab lish the truth of such an important MATHEMATICAL theorem in other than 
 mathematical means, what is the value of the maths?  
 

What you have given is the handwaving version of the proof. The
trouble is that human imagination can easily get us into trouble when
dealing with infinities, which is necessarily involved in dealing with
the concept of continuity. In the above example, you mention that
continuity is important, but say nothing about differentiability. Are
you aware that continuous curves that are nowhere differentiable
exist? I fact most continuous curves are not differentiable. By most,
I mean infinitely more continuous curves are not differentiable than
those that are, a concept handled by sets of measure zero.

To give an example, consider your interval joined by two line segments
so as to form a single kink in the middle at point c:

At all points on the interior, except for the c, the slope is either
s1 = (f(c)-f(a))/(c-a) or s2=(f(b)-f(c))/(b-c). At c, the slope is
undefined. But neither s1 nor s2 = (f(b)-f(a))/(b-1), so the mean
value theorem fails.

 I promise I am not MERELY trying to be a horses ass, here.  
 
 Nick 
 
 

Handwaving arguments are good for developing intuition. Great for
teaching during a lecture, and get the students to study the rigorous
proof later. Similarly, they're good for scientific seminars, but not
scientific papers.

Cheers

 
 
 
 
 
  
 
  
 
  
 
 .  
 
 
 
 
 Nicholas S. Thompson
 Research Associate, Redfish Group, Santa Fe, NM ([EMAIL PROTECTED])
 Professor of Psychology and Ethology, Clark University ([EMAIL PROTECTED])
 
 FRIAM Applied Complexity Group listserv
 Meets Fridays 9a-11:30 at cafe at St. John's College
 lectures, archives, unsubscribe, maps at http://www.friam.org

-- 


A/Prof Russell Standish  Phone 0425 253119 (mobile)
Mathematics  
UNSW SYDNEY 2052 [EMAIL PROTECTED]
Australiahttp://www.hpcoders.com.au



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Re: [FRIAM] Criminalizing Peace

2007-07-22 Thread PPARYSKI
I received this from Frank Wimberly and think it deserves distribution and  
reaction.  Bush's executive order is appalling and frightening even more so  
because the media have not adequately reported it or reacted. Perhaps we could  
apply a RNG to Bush and Cheney?  cheers (?) Paul



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Re: [FRIAM] Despite the Web, Americans Remain Woefully Ill-Informed

2007-07-22 Thread steve smith
I am disturbed by the non-sequitur inherent in the Subject and Body of 
this article:   It suggests that the Web inherently *should* make 
Americans more well informed.

3  points:

1) I agree that these are not particularly important questions in their 
own right, but they *are* hugely  significant indicators of how 
uninformed the folks who were studied are on this type  of details, 
and I agree with Owen that is scary that anyone ALIVE in the US ... 
cannot answer these.

2) The internet, in my opinion, is still mainly a reference source...  
Somewhere between a dictionary or encyclopedia and a newspaper or 
magazine subscription.

If people aren't interested in these kinds of facts, they won't look 
them up and they won't subscribe (e-mail lists, blogs, podcasts, 
news/information web sites) to sources that provide them.   Like the 
folks I grew up around whose only reading material was their 
subscription to GRIT or Nat'l Enquirer.

3) If there is a correlation, perhaps it is a negative one... the ratio 
of important (by some measure) factoids to the unimportant (by any 
measure) has plummeted, no?

Even TV (with 182 channels) in it's ubiquity has aggravated this.   
At 5 or 6 PM and 10 PM each night in my youth, *any* television running 
would be showing news... mediated by a local station such that anyone 
within earhshot would hear their Gov's name as well as the VP's and 
some of the other facts in question fairly frequently.   Today 
specialized channels like ESPN, MTV, TBS, HBO, Science, Discovery, even 
CNN (and all of their competitors/wannabes) mean that you can run your 
TV night and day and never hear most of these things (even with CNN you 
won't hear your Gov's name often unless he's a bombast like our own).

At the newsstand there are hundreds of magazines where there were once 
tens.   Geeks like us maybe all read Byte and now Wired (haven't had a 
subscription in a decade myself) and maybe Nature/Science/SciAm  and 
maybe Fashionistas all read Cosmo (or whatever is equivalent) but the 
competition for eyeballs (and ears) is fierce... and a lot that is 
being offered up is overly refined (like white sugar, flour, 
corn-syrup, textured-vegetable-protein, etc.) to do more than satisfy 
(seduce) the most immediate of appetites.


Owen said:
I sorta have to agree: Just how IMPORTANT are any of these questions?

 The five questions:
 Who is the vice president?
 Who is your state's governor?
 Does the US have a trade deficit or surplus?
 Which party controls the House of Representatives?
 Is the chief justice of the Supreme Court a liberal, moderate, or
 conservative?

 If you were to be able to ask 5 questions that you would LIKE folks
 to know the answer to, would any of these be on it?  I think only
 one .. the trade deficit.

 But, man, its scary to know that there's anyone ALIVE in the US who
 cannot answer these.




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Re: [FRIAM] Why true random?

2007-07-22 Thread PPARYSKI
Logically is true, perfect randomness possible since it is being  generated 
by a program designed by a human with a purpose - a thought  construct?  On one 
level is anything in the universe truly random?  

Paul Paryski



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Re: [FRIAM] Criminalizing Peace

2007-07-22 Thread PPARYSKI
Somehow the fwd about Bush's exec order didn't work, so I have copied the  
text below.  Paul Paryski
 
 
 
While the American public...and the  world...was being diverted by news 
stories of Dubya's  colonoscopy  scheduled for today, this, his latest 
executive 
order,  was signed July 17,  2007...  However, blogs, blogging comments have  
been numerous...see a  sampling below.
 

 
Bush Executive Order:  Criminalizing the Antiwar  Movement
 
By Prof. Michel  Chossudovsky
 
July 20,  2007
 
The  Executive Order entitled Blocking Property of Certain Persons Who  
Threaten Stabilization Efforts in Iraq provides the President with the  
authority 
to confiscate the assets of whoever opposes the US led  war.   
A presidential Executive  Order issued on July 17th, repeals with the stroke 
of a pen  the right to dissent  and to oppose the Pentagon's military agenda 
in Iraq.   
The Executive Order entitled  Blocking Property of Certain Persons  Who 
Threaten Stabilization Efforts in Iraq provides the President  with the 
authority 
to confiscate the assets of  certain persons who  oppose the US led war in 
Iraq: 
I have issued an Executive Order  blocking property of persons determined to 
have committed, or to pose a  significant risk of committing, an act or acts 
of violence that have the  purpose or effect of threatening the peace or 
stability of Iraq or the  Government of Iraq or undermining efforts to promote 
economic  reconstruction and political reform in Iraq or to provide 
humanitarian  
assistance to the Iraqi  people. 
In substance, under this executive  order, opposing the war becomes an 
illegal act.  

The  Executive Order criminalizes the antiwar movement. It is intended  to  
blocking property of  US citizens and organizations  actively involved in the 
peace movement. It allows the Department of  Defense to interfere in 
financial affairs and instruct the  Treasury to block the property and/or 
confiscate/ freeze the assets  of Certain Persons involved in antiwar 
activities. It 
targets those  Certain Persons in America, including civil society  
organizatioins, who oppose the Bush Administration's peace and stability  
program in 
Iraq, characterized, in plain  English, by an illegal occupation and the 
continued killing of innocent  civilians.  
The Executive Order also targets  those Certain Persons who are 
undermining efforts to promote economic  reconstruction, or who, again in 
plain 
English, are opposed to the  confiscation and privatization of  Iraq's oil 
resources, 
on behalf of  the Anglo-American oil  giants.   



The order is also intended for anybody who  opposes Bush's program of  
political reform  in Iraq, in other words, who  questions the legitimacy of 
an 
Iraqi government installed by the  occupation forces.  
Moreover, those persons or  nongovernmental organizations (NGOs), who provide 
bona fide humanitarian  aid to Iraqi civilians, and who are not approved by 
the US Military or its  lackeys in the US sponsored Iraqi puppet government are 
also liable to  have their financial assets  confiscated.
The executive order violates the  First, Fourth and Fifth Amendments of the 
US Constitution. It repeals one  of the fundamental tenets of  US democracy, 
which is the  right to free expression and dissent. The order has not been the 
object of  discussion in the US Congress. Sofar, it has not been addressed   by 
the US antiwar movement, in  terms of a formal statement.

Apart from a bland Associated Press  wire report, which presents the 
executive order as an authority to use  financial sanctions, there has been 
no media 
coverage or commentary of a  presidential decision which strikes at the heart 
of the  US Constitution..   
Broader  implications  
The criminalization of the State is  when the sitting President and Vice 
President use and  abuse their authority through executive orders, presidential 
 
directives or otherwise  to define who are the criminals when in  fact they 
they are the criminals.   

This latest executive  order criminalizes the peace movement. It must be 
viewed in relation  to various pieces of anti-terrorist legislation, the 
gamut 
of  presidential and national security directives, etc., which are ultimately  
geared towards repealing constitutional government and installing martial  law 
in the event of a national  emergency... 
Excerpted from: _http://www.globalresearch.ca/index.php?context=vaaid=6377_ 
(http://www.globalresearch.ca/index.php?context=vaaid=6377)   
Text of the Executive Order: 
_http://www.whitehouse.gov/news/releases/2007/07/20070717-3.html_ 
(http://www.whitehouse.gov/news/releases/2007/07/20070717-3.html)  
Message  to the Congress of the United States Regarding  International 
Emergency Economic Powers Act _ht
tp://www.whitehouse.gov/news/releases/2007/07/20070717-4.html_ 
(http://www.whitehouse.gov/news/releases/2007/07/20070717-4.html)  
  

Re: [FRIAM] DISREGARD: math and the mother church

2007-07-22 Thread Nicholas Thompson
Russell, 

Remember, mine was a book for English Majors,  Berlinski's Tour of the
Calculus.  

But thou quibblest! Dothn't thou? Why is the algebra necessary at all. 
Doesnt the mean value theorem fall out of the definition of a mean and the
definition of continuity?  Full stop.  Granting only that the mean falls
between (or is one of) the extremes?  

Nick 

PS.  I apologize for my message garblement.  In fact I had NOT sent an
incomplete message.  So the message saying disregard the message was the
only message.   This is not a pipe.

Nick 




 [Original Message]
 From: Russell Standish [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]; The Friday Morning Applied Complexity
Coffee Group friam@redfish.com
 Date: 7/22/2007 7:04:29 PM
 Subject: Re: [FRIAM] DISREGARD: math and the mother church

 On Sun, Jul 22, 2007 at 06:12:58PM -0600, Nicholas Thompson wrote:
  
  So, here is my present understanding of the mathematician's argument
for the mean value theorem.  What I dont understand is why it takes three
pages of algebra to get there!

 I don't know where you get the 3 pages from. My analysis book does it
 2 paragraphs of algebra, half a page at most. (That's including all
 the necessary lemmas and definitions).

  
  Let us amagine that ab is a bit of a line.  It could be straight, and
the argument would still hold, but let us imagine that it is curved
curved up, curved down, it does not matter.  Let's imagine that is an
inverted U, except that it doesnt have to be a straight up and down
inverted U.  In fact, it can be sitting so that somebody wobbled it so that
it is, at the instant of being photographed, standing on one leg, about 30
degrees from the verticle.  .  
  
  What does matter is that the line be continuous ALL THE WAY FROM a to
B.  No gaps,  not steps.  Imagine that no matter how small the steps you
are taking, you can walk along the points of the line from a to b and not
get your feet wet, NOT AT ALL -- if of course your shoe size is small
enough.  
  
  Now draw a line that connects the bottom of the two legs of the
inverted U.  As we just said, that line will move off to the right, from a
through b and beyond,  at about a thirty degree angle from the horizontal. 
Thus the mean slope of the tilted inverted U is 30 degrees, right?
  
  Here is what that means, as I understand it. Every point on the tilted
inverted U has a slope, the slope of the line that is just tangent to the
U at that point.  Near point a that slope is VERY positive;  near point
b, that slope is very negative.  Now, imagine  you set out to walk along
the curve from a to b.  If you take tiny enough steps, you MUST step on
the point where the slope is the same as the mean slope.   That is what the
mean value theorem says.  
  
  But I just got there without any of the algebra usually devoted to that
proof.  So the question is,  what is the VALUE of the algebra.  If one can
estab lish the truth of such an important MATHEMATICAL theorem in other
than mathematical means, what is the value of the maths?  
  

 What you have given is the handwaving version of the proof. The
 trouble is that human imagination can easily get us into trouble when
 dealing with infinities, which is necessarily involved in dealing with
 the concept of continuity. In the above example, you mention that
 continuity is important, but say nothing about differentiability. Are
 you aware that continuous curves that are nowhere differentiable
 exist? I fact most continuous curves are not differentiable. By most,
 I mean infinitely more continuous curves are not differentiable than
 those that are, a concept handled by sets of measure zero.

 To give an example, consider your interval joined by two line segments
 so as to form a single kink in the middle at point c:

 At all points on the interior, except for the c, the slope is either
 s1 = (f(c)-f(a))/(c-a) or s2=(f(b)-f(c))/(b-c). At c, the slope is
 undefined. But neither s1 nor s2 = (f(b)-f(a))/(b-1), so the mean
 value theorem fails.

  I promise I am not MERELY trying to be a horses ass, here.  
  
  Nick 
  
  

 Handwaving arguments are good for developing intuition. Great for
 teaching during a lecture, and get the students to study the rigorous
 proof later. Similarly, they're good for scientific seminars, but not
 scientific papers.

 Cheers

  
  
  
  
  
   
  
   
  
   
  
  .  
  
  
  
  
  Nicholas S. Thompson
  Research Associate, Redfish Group, Santa Fe, NM ([EMAIL PROTECTED])
  Professor of Psychology and Ethology, Clark University
([EMAIL PROTECTED])
  
  FRIAM Applied Complexity Group listserv
  Meets Fridays 9a-11:30 at cafe at St. John's College
  lectures, archives, unsubscribe, maps at http://www.friam.org

 -- 



 A/Prof Russell Standish  Phone 0425 253119 (mobile)
 Mathematics
 UNSW SYDNEY 2052 

Re: [FRIAM] Despite the Web, Americans Remain Woefully Ill-Informed

2007-07-22 Thread Roger Critchlow

On 7/22/07, steve smith [EMAIL PROTECTED] wrote:


I am disturbed by the non-sequitur inherent in the Subject and Body of
this article:   It suggests that the Web inherently *should* make
Americans more well informed.



Myself, I'm getting a little tired of the pop quizzes demonstrating one kind
of ignorance or another.

Given any population, there exists some set of questions which they will get
mostly wrong, and another set they will get mostly right.  So what?

Ability to regurgitate facts on demand measures what?  Ability to think?
No.  Ability to research?  No.  Ability to make good decisions?  No.
Ability to ask good questions?  No.  Ability to understand answers?  No.

If you want people to look smart, ask questions they know the answer to.  If
you want them to look stupid, ask other questions.  In either case,
establish that the questions asked are the ones the people should know by
hand waving, because there is no authority for the questions people should
be able to answer.

-- rec --

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Re: [FRIAM] Despite the Web, Americans Remain Woefully Ill-Informed

2007-07-22 Thread Marcus G. Daniels
steve smith wrote:
 2) The internet, in my opinion, is still mainly a reference source...  
 Somewhere between a dictionary or encyclopedia and a newspaper or 
 magazine subscription.

 If people aren't interested in these kinds of facts, they won't look 
 them up and they won't subscribe (e-mail lists, blogs, podcasts, 
 news/information web sites) to sources that provide them.  
With more kinds of appealing facts accessible (ranging from gossip blogs 
to online academic journals),  and assuming fixed available attention by 
individuals, then we should expect per-individual knowledge of any 
particular topic to be reduced...



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[FRIAM] It's the Spies, Stupid!

2007-07-22 Thread Peter Lissaman
 all input effects all output in some sort of way,
 but it was the outcomes that would come from the whole gamete of
 unspecified inputs that seemed to be the 'phase space profile' they were
 most interested in.   
  
 Many of the papers were on how the inputs could seriously 'misbehave'
 and still not screw up the control schemes, often discussed in terms of
 'malicious agent' concepts, of which the real net has plenty real
 examples! I also found them very receptive to considering not only
 what a malicious person would think of doing to defeat someone else's
 operating plan, but also the 'malicious creativity' of natural system
 emergence as a focus of design contingencies.
  
  

 Phil Henshaw   .?? ? `?.
 ~~~
 680 Ft. Washington Ave 
 NY NY 10040   
 tel: 212-795-4844 
 e-mail: [EMAIL PROTECTED]  
 explorations: www.synapse9.com http://www.synapse9.com/ 

 -Original Message-
 From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
 Behalf Of Douglas Roberts
 Sent: Sunday, July 22, 2007 1:19 AM
 To: The Friday Morning Applied Complexity Coffee Group;
 [EMAIL PROTECTED]
 Subject: Re: [FRIAM] Why true random?


 Simulations of stochastic processes also require good RN generators,
 especially for simulations of large systems with (I hate to use this
 word) emergent behavioral properties.  A bad RN generator will introduce
 emergent behavior that will be flavored by a bad random sequences. 


 -- 
 Doug Roberts, RTI International
 [EMAIL PROTECTED]
 [EMAIL PROTECTED]
 505-455-7333 - Office
 505-670-8195 - Cell 



 On 7/20/07, Russell Standish [EMAIL PROTECTED] wrote: 

 Cryptographic applications require true randomness. If your cipher
 used on a pseudo-random number generator, then a cracker discovering
 your algorithm and key has broken your code.

 I also have a hunch that genuine randomness is needed for open-ended 
 evolutionary systems. Here, the evol algorithm is in the position of
 the code cracker, and once the code is cracked, the evol algorithm
 stops. I had a workshop paper on this in 2004, which has some problems
 with it. The concept is controversial, to say the least. 

 Cheers

 On Sat, Jul 21, 2007 at 10:24:42AM -0600, Peter Lissaman wrote:
  Why is it important (except intellectually) to have true
 randomness???  I very well remember the early, good old, bad old, days
 of Aerospace, in the 50's, when we were really doing practical
 earthshattering things -- like going to the moon -- sans computers!!
 The RAND corporation, for whom I consulted, published a typed book (size
 of a Manhattan telephone directory) of random numbers  for engineering
 application.  Much entertainment was occasioned when, about three months
 later, they distributed a list of typos to their original list of
 random numbers.  Today I use homemade random numbers alla time for real
 problems, specifically the actual response of real flight vehicles in
 real atmospheric turbulence.  Flight tests support  analysis, in the
 sense that what we predict is not obviously incorrect.  We have never
 found it necessary to utilize any more perfectly random random
 sequences! 
 
 
  Peter Lissaman, Da Vinci Ventures
 
  Expertise is not knowing everything, but knowing what to look for.
 
  1454 Miracerros Loop South, Santa Fe, New Mexico 87505
  TEL: (505) 983-7728 FAX: (505) 983-1694 
  
  FRIAM Applied Complexity Group listserv
  Meets Fridays 9a-11:30 at cafe at St. John's College
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 A/Prof Russell Standish  Phone 0425 253119 (mobile)
 Mathematics
 UNSW SYDNEY 2052 [EMAIL PROTECTED]
 Australiahttp://www.hpcoders.com.au
 http://www.hpcoders.com.au 
 
 

 
 FRIAM Applied Complexity Group listserv
 Meets Fridays 9a-11:30 at cafe at St. John's College 
 lectures, archives, unsubscribe, maps at http://www.friam.org





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 Message: 8
 Date: Sun, 22 Jul 2007 07:40:10 -0600
 From: Roger Frye [EMAIL PROTECTED]
 Subject: Re: [FRIAM] Why true random?
 To: The Friday Morning Applied Complexity Coffee Group
   friam@redfish.com
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 I would argue the opposite.  While I agree with Doug that you need good  
 RNGs (though not necessarily true RNGs) in order to avoid bias