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Topic: Mathematica and Lisp
Replies: 83   Last Post: Mar 5, 2013 10:12 PM

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Richard Fateman

Posts: 1,404
Registered: 12/7/04
Re: Mathematica and Lisp
Posted: Feb 6, 2013 1:51 AM
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On 2/3/2013 5:20 PM, John Doty wrote:
....
You seem to think I haven't written Mathematica programs.
Maybe looking at the appendix here would change your mind.
Maybe not, though.
http://www.cs.berkeley.edu/~fateman/papers/better-rules.pdf


(JD writes..)


>
> Considered as software failures, both of these occurred in application code and were not the result of programming language deficiencies.


Was the code not written in a programming language?
Even if it was written in assembler, that too is
a programming language. I expect that the bug
occurred because the programmer did not realize the
semantics of the code.


>I don't find Mathematica to be especially mysterious relative to its capabilities.

Mathematica the language is, I think, relatively mysterious. The
application underneath it adds both capabilities and extra mystery.
>
>>

>> (RJF)
I would hope you would be very aware of the Ariane 5
>>
>> and similar disasters.

>
> I am aware of those, as well as many that you've never heard of.


How would you know that I don't know? Are they secret?

>
> Not all bugs are of equal importance. An error of 5.5E-79 in a Bessel function is very unlikely
>to cause trouble in a practical application.


One of the marvels of computing today is that it is possible to do so
much in such a short time.
One can execute billions of instructions a second. If only
one in a million does the wrong thing, and is wrong only
by a tiny percent, you can accumulate a whopping mistake
in a second.

I've been using Mathematica to do practical work since version 1,
> and I've never encountered a bug in its numerics.

I guess it is my turn to wonder if YOU know much about Mathematica.


>
> Crazy results from numerical codes are a normal occurrance,
>...
> I don't find Mathematica to be unusually hazardous here.


I guess I disagree on this point.
>
>> This is pretty far afield from the original question which I
>>
>> think was somehow...s Mathematica somehow Lisp-like.... should I learn Lisp...

>
> I'm unusual in that I write practical engineering code in Scheme (a Lisp dialect),
> along with code for both science and engineering in Mathematica.


I think that is unusual, but I count it as a good thing. Though
Common Lisp (a Lisp dialect) is used in space computations --
the Hubble telescope. For more applications, see
http://common-lisp.net/~dlw/LispSurvey.html

...
>
> Programming language specialists have many interesting ideas,
> but lousy judgement when it comes to which ones are important
>in any particular application context.


Somewhat over-generalized, I think.
.....

RJF





Date Subject Author
1/11/13
Read Mathematica and Lisp
amzoti
1/12/13
Read Re: Mathematica and Lisp
Richard Fateman
1/12/13
Read Re: Mathematica and Lisp
David Bailey
1/14/13
Read Re: Mathematica and Lisp
Richard Fateman
1/14/13
Read Re: Mathematica and Lisp
David Bailey
1/16/13
Read Re: Mathematica and Lisp
Richard Fateman
1/18/13
Read Re: Mathematica and Lisp
David Bailey
1/22/13
Read Re: Mathematica and Lisp
Richard Fateman
1/22/13
Read Re: Mathematica and Lisp
David Bailey
1/24/13
Read Re: Mathematica and Lisp
Richard Fateman
1/25/13
Read Re: Mathematica and Lisp
Richard Fateman
1/26/13
Read Re: Mathematica and Lisp
Murray Eisenberg
1/26/13
Read Re: Mathematica and Lisp
Murray Eisenberg
1/26/13
Read Re: Mathematica and Lisp
W. Craig Carter
1/16/13
Read Re: Mathematica and Lisp
Murray Eisenberg
1/16/13
Read Re: Mathematica and Lisp
Richard Fateman
1/16/13
Read Re: Mathematica and Lisp
David Bailey
1/18/13
Read Re: Mathematica and Lisp
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1/31/13
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Noqsi
2/2/13
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Daniel Lichtblau
2/3/13
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Richard Fateman
2/2/13
Read Re: Mathematica and Lisp
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2/3/13
Read Re: Mathematica and Lisp
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2/5/13
Read Re: Mathematica and Lisp
Richard Fateman
2/6/13
Read Re: Mathematica and Lisp
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2/6/13
Read Re: Mathematica and Lisp
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2/3/13
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2/5/13
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2/6/13
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2/10/13
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2/9/13
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2/10/13
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2/9/13
Read Re: Mathematica and Lisp
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2/15/13
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2/17/13
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2/18/13
Read Re: Mathematica and Lisp
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2/18/13
Read Re: Mathematica and Lisp
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2/22/13
Read Re: Mathematica and Lisp
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2/23/13
Read Re: Mathematica and Lisp
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2/23/13
Read Re: Mathematica and Lisp
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2/25/13
Read Re: Mathematica and Lisp
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2/26/13
Read Re: Mathematica and Lisp
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2/27/13
Read Re: Mathematica and Lisp
Bill Rowe
2/27/13
Read Re: Mathematica and Lisp
Richard Fateman
3/2/13
Read Re: Mathematica and Lisp
Bill Rowe
3/3/13
Read Re: Mathematica and Lisp
Richard Fateman
3/3/13
Read Re: Mathematica and Lisp
Noqsi
3/5/13
Read Re: Mathematica and Lisp
Richard Fateman
3/5/13
Read Re: Mathematica and Lisp
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3/3/13
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1/16/13
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1/16/13
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1/18/13
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2/23/13
Read Re: Mathematica and Lisp
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2/25/13
Read Re: Mathematica and Lisp
Richard Fateman
2/26/13
Read Re: Mathematica and Lisp
Noqsi

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