Re: Re: Re: error with Sum and Infinity
- To: mathgroup at smc.vnet.net
- Subject: [mg102488] Re: [mg102409] Re: [mg102387] Re: error with Sum and Infinity
- From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
- Date: Tue, 11 Aug 2009 04:03:45 -0400 (EDT)
- References: <h5bk64$hlm$1@smc.vnet.net> <200908070932.FAA15211@smc.vnet.net> <29EAD82D-4D06-4036-923E-97DD7B2EDC46@mimuw.edu.pl> <4A7C6176.9060002@cs.berkeley.edu> <200908080838.EAA01301@smc.vnet.net> <op.uyfiuix8tgfoz2@bobbys-imac.local> <4031E1F9-B399-4387-A2E7-FB9CBA19F824@mimuw.edu.pl> <op.uygog8nytgfoz2@bobbys-imac.local>
Even if they don't, (almost) nobody will notice any difference. Presumably that is why they are undocumented. Andrzej On 11 Aug 2009, at 04:30, DrMajorBob wrote: > If these options (and numerous other features) are not documented, > does WRI have any commitment to leaving them alone? > > If not, aren't we building our houses on sand? > > Bobby > > On Mon, 10 Aug 2009 01:49:39 -0500, Andrzej Kozlowski <akoz at mimuw.edu.pl > > wrote: > >> Yes, its undocumented. So is everything else (I think) you see when >> you evaluate >> >> SystemOptions[] >> >> On the other hand, SystemOptions and SetSystemOptions is documented. >> >> I don't know if SystemOptions should be documented or not. I >> explained my reasons in an off-list discussion with a certain >> mythical scandinavian creature which from time to time visits this >> list, but as I do not feel like repeating it all here I will only >> say that while I would personally like to see more documentation I >> recognize that it would take quite a lot of time and effort to >> produce it and most of it would probably be found useful by less >> people than it would take to write it. >> >> Andrzej >> >> >> On 10 Aug 2009, at 13:31, DrMajorBob wrote: >> >>> "SymbolicSumThreshold" is interesting... but undocumented. We >>> cannot search for it with ?, and we cannot search for it in >>> DocumentationCenter. >>> >>> Even now that I've seen your statement "SymbolicSumThreshold" /. >>> SystemOptions[], I have no proof it means what you suggest it means. >>> >>> Not that I won't take your word for it, mind you... but that's not >>> documentation. >>> >>> Bobby >>> >>> On Sat, 08 Aug 2009 03:38:55 -0500, Andrzej Kozlowski <akoz at mimuw.edu.pl >>> > wrote: >>> >>>> >>>> On 8 Aug 2009, at 02:16, Richard Fateman wrote: >>>> >>>>> Andrzej Kozlowski wrote: >>>>>> >>>>>> On 7 Aug 2009, at 18:32, Richard Fateman wrote: >>>>>> >>>>>>> Well, see Elton TeKolste's remarkable post. >>>>>>> I doubt that the "feature" he illustrates would be known even by >>>>>>> most >>>>>>> experienced users. >>>>>> >>>>>> >>>>>> Well, you are wrong. For example, check this post (about the >>>>>> fastest way of adding up a billion numbers) >>>>>> >>>>>> http://forums.wolfram.com/mathgroup/archive/2007/Mar/ >>>>>> msg00565.html >>>>>> >>>>>> and the rest of the discussion. >>>>> >>>>> I think you flatter yourself and mathgroup to think that "most >>>>> experienced users" will have read your post from March, 2007. >>>> >>>> Are you saying that there are "experienced users" who have not read >>>> all my posts? Impossible! >>>> >>>> However, should such a strange phenomenon really exist, he or she >>>> can >>>> always evaluate >>>> >>>> "SymbolicSumThreshold" /. SystemOptions[] >>>> 1000000 >>>> >>>> which, I think, deals with the rest of your post. >>>> >>>> Andrzej >>>> >>>> >>>> >>>>> I just checked the documentation and I see no notice of that magic >>>>> number (though maybe it is there somewhere and I missed it??). >>>>> >>>>> >>>>> Is there a way of finding that magic number without >>>>> experimentation >>>>> or "insider" knowledge? Would "most experienced users" know that? >>>>> >>>>> If it is not in the documentation, the rules of the game mean that >>>>> WRI is free to change that magic number, or eliminate it, without >>>>> notice, so any experienced user would be loathe to take >>>>> advantage of >>>>> it for fear that any program utilizing it would cease to work in a >>>>> new version. >>>>> >>>>> RJF >>>> >>>> >>>> >>> >>> >>> >>> --DrMajorBob at bigfoot.com >> > > > > -- > DrMajorBob at bigfoot.com
- References:
- Re: error with Sum and Infinity
- From: Richard Fateman <fateman@cs.berkeley.edu>
- Re: Re: error with Sum and Infinity
- From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
- Re: error with Sum and Infinity