[Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Jerzy Karczmarczuk

Now, something really à côté de la plaque...
Jack Henahan terminates his useful advice addressed to A. Coppin:

Computer science is no more about computers than astronomy is about telescopes.
-- Edsger Dijkstra

This citation makes me think, and since this became rare, I share it.

 * It is unsourced, repeated without discernment, and Dijkstra cannot
   confirm (or deny) it any more. Somehow I cannot believe he said that...
 * Dijkstra began to study physics, and a physicist would be reluctant
   to make such puns. Why?
 o Astronomy, and physics are not only theories of galaxies or
   superfluids, but also methodologies of data acquisition and data
   processing. Telescopes evolve with our knowledge of the visible
   universe, as the accelerators evolve with our knowledge of
   elementary particles. You have to know where to look! And how to
   interpret the raw, experimental data.
 o So, whether you call it Informatique, Datalogi, or whatever, it
   is */also/* about computers. Do you really think that the
   algorithmics, the thory of parallel computation, etc., have
   nothing to do with concrete implementations?
 * These among you who touched just a bit of astronomy, should know
   what a horrendous amount of truly astronomical knowledge is
   necessary to make the telescope work! For example to synchronize it
   with the earth movement...
 * This citation seems to be a savant variant of: The Fool Looks At
   The Finger That Points To The Sky case... OK, if you wish. But I
   had an occasion to sit near a beautiful girl  who pointed her hand
   and her eyes in the direction of wonderful Zodiac constellations; it
   was midnight in the mountains. I don't remember the details, but
   without being a fool, I didn't look at the stars... (Well, actually
   I was a fool, but it is a long story).


Jerzy Karczmarczuk
Caen, France




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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Christopher Done
Wherever its origin, it is featured in SICP which was out in 1984:
http://www.youtube.com/watch?v=zQLUPjefuWA It's a sound analogy.

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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Gwern Branwen
On Mon, Aug 29, 2011 at 11:19 AM, Jerzy Karczmarczuk
jerzy.karczmarc...@unicaen.fr wrote:
 It is unsourced, repeated without discernment, and Dijkstra cannot confirm
 (or deny) it any more. Somehow I cannot believe he said that...
 Dijkstra began to study physics, and a physicist would be reluctant to make
 such puns. Why?

Some googling takes me to the full quote:

 Computer science is no more about computers than astronomy is about 
 telescopes, biology is about microscopes, or chemistry is about beakers and 
 test tubes. Science is not about tools. It is about how we use them, and what 
 we find out when we do.

Which is referenced to, inside _Invitation to Computer Science_ (G.
Michael Schneider, Judith L. Gersting, Keith Miller;
http://books.google.com/books?id=gQK0pJONyhgC ), to Fellows, M.R.,
and Parberry, I. Getting Children Excited About Computer Science,
_Computing Research News_, vol. 5, no. 1 (January 1993).

Curiously, the preface to the quote is:

 This distinction between computers and computer science is beautifully 
 expressed by computer scientists Michael R. Fellows and Ian Parberry in an 
 article in the journal _Computing Research News_:

*No* mention of Dijkstra. Searching that full book, the only Dijkstra
mentions are unconnected to the quote.

Chasing links, I head to
http://archive.cra.org/CRN/issues/by_title_by_issue.html and download
January 1993: http://archive.cra.org/CRN/issues/9301.pdf

On page 7, I find it. The article title is different: SIGACT trying
to get children excited about CS. The money line is highlighted. The
relevant paragraph and surrounding paragraphs:

 Is it any wonder then that computer science is represented in many schools by 
 either computer games or some antiquated approach to programming, which at 
 worst concentrates on a litany of syntax and at best emphasizes expediency 
 over effectiveness and efficiency? But computer science is not about 
 computers—it is about computation.

 What would we like our children- the general public of the future—to learn 
 about computer science in schools? We need to do away with the myth that 
 computer science is about computers. Computer science is no more about 
 computers than astronomy is about telescopes, biology is about microscopes or 
 chemistry is about beakers and test tubes. Science is not about tools, it is 
 about how we use them and what we find out when we do.

 It may come as a surprise to some that computer science is full of activities 
 that children still find exciting even without the use of computers. Take 
 theoretical computer science, for example, which may seem an unlikely 
 candidate. If computer science is underrepresented in schools, then 
 theoretical computer science is doubly so.

This is the precise quote, with no quotation marks or references or
allusions of any kind; this seems to be the original, where the exact
quote comes from. There are no mentions whatsoever of Dijkstra in the
January PDF.

On Mon, Aug 29, 2011 at 11:25 AM, Christopher Done
chrisd...@googlemail.com wrote:
 Wherever its origin, it is featured in SICP which was out in 1984:
 http://www.youtube.com/watch?v=zQLUPjefuWA It's a sound analogy.

Abelson doesn't cite Dijkstra in the first minute where he makes the
comparisons, either, unless I missed it.

As well, in no Google hit did I find any specific citation to
Dijkstra. Hence, I conclude that because it is insightful and sounds
like Dijkstra (eg. his submarine quote), it has become apocryphally
associated with him but is *not* actually a Dijkstra quote.

-- 
gwern
http://www.gwern.net

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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Jack Henahan
Better?

Jack Henahan
jhena...@uvm.edu
==
Computer science is no more about computers than astronomy is about telescopes….
-- Michael R. Fellows and Ian Parberry
==



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On Aug 29, 2011, at 11:47 AM, Gwern Branwen wrote:

 Michael R. Fellows and Ian Parberry

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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Jack Henahan
In fairness, I already knew it wasn't an actual Dijkstra quote. It's just one 
that gets thrown around with his name on it. The origins were misty enough that 
I just decided to pick the one that pop culture chose.

Jack Henahan
jhena...@uvm.edu
==
Computer science is no more about computers than astronomy is about telescopes….
-- Michael R. Fellows and Ian Parberry
==



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On Aug 29, 2011, at 12:08 PM, Jack Henahan wrote:

 Better?
 
 Jack Henahan
 jhena...@uvm.edu
 ==
 Computer science is no more about computers than astronomy is about 
 telescopes….
 -- Michael R. Fellows and Ian Parberry
 ==
 
 398E692F.gpg
 
 On Aug 29, 2011, at 11:47 AM, Gwern Branwen wrote:
 
 Michael R. Fellows and Ian Parberry
 
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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread aditya siram
I'm afraid you're going to have a lot of OCD's completely miss the point of
your email and annoy you with comments about the quote which you'll then
have to refute.

I'd actually stick with the old comment, remove it completely, include a
short summary with a link to the paper or attribute it to Abe Lincoln.

-deech

On Mon, Aug 29, 2011 at 11:08 AM, Jack Henahan jhena...@uvm.edu wrote:

 Better?

 Jack Henahan
 jhena...@uvm.edu
 ==
 Computer science is no more about computers than astronomy is about
 telescopes….
 -- Michael R. Fellows and Ian Parberry
 ==




 On Aug 29, 2011, at 11:47 AM, Gwern Branwen wrote:

  Michael R. Fellows and Ian Parberry


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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Gwern Branwen
On Mon, Aug 29, 2011 at 12:18 PM, aditya siram aditya.si...@gmail.com wrote:
 I'm afraid you're going to have a lot of OCD's completely miss the point of
 your email and annoy you with comments about the quote which you'll then
 have to refute.

I dunno, I found the quote interesting. I had typed up a scornful
response to the effect that everyone knows it's a Dijkstra quote and
he could find sourcing in seconds with Google, but as the seconds
passed, I had to rewrite the seconds bit, then as I found actual
cites, I had to rewrite the Dijkstra bit, and then I realized that
replying to that email might take a while...

-- 
gwern
http://www.gwern.net

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Re: [Haskell-cafe] Truly Really Off-topic: (Was: Mathematics)

2011-08-29 Thread Gwern Branwen
On Mon, Aug 29, 2011 at 11:47 AM, Gwern Branwen gwe...@gmail.com wrote:
 As well, in no Google hit did I find any specific citation to
 Dijkstra. Hence, I conclude that because it is insightful and sounds
 like Dijkstra (eg. his submarine quote), it has become apocryphally
 associated with him but is *not* actually a Dijkstra quote.

To follow up:

- 'telescopes' does not appear anywhere in the EWDs:
http://ewd.cs.utexas.edu.master.com/texis/master/search/?sufs=0q=telescopesxsubmit=Searchs=SS
- Ruud Koot points to an August* 1993 PhD thesis
(http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.53.8045rep=rep1type=pdf)
which attributes it, with no citation or sourcing information, to
Dijkstra
- a Redditor claims, with no citation or sourcing information, that it
was Marvin Minsky
(http://www.reddit.com/r/programming/comments/jy1zw/psa_dijkstra_did_not_say_computer_science_is_no/c2g17xt)

* that is, well after the original January 1993 article

-- 
gwern
http://www.gwern.net

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