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Should Wikipedia Allow Mathematical Proofs?

Beetle B. writes "An argument has arisen over whether Wikipedia should allow pages that provide proofs for mathematical theorems (such as this one). On the one hand, Wikipedia is a useful source of information and people can benefit from these proofs. On the other hand, how does one choose which proofs to include and which not to? Should Wikipedia just become a textbook that teaches mathematics? Should it just state the bare results of theorems and not provide proofs (except as external links)? Or should they take an intermediate approach and formulate a criterion for which proofs to include and which to exclude?"

15 of 469 comments (clear)

  1. Sure by lenmaster · · Score: 5, Insightful

    Of course they should allow proofs. Proofs are useful and factual information and proofs alone don't really "teach" mathematics are far as I'm concerned. They should take care to properly separate proofs from higher level information, as not everyone is interested in them.

    1. Re:Sure by Sorcha+Payne · · Score: 5, Insightful

      >a) how do you know the proof is correct? Other people would read the incorrect proof, see the errors, and change it so that it is correct just like any other article. >b) how do you organize all of the mathematics coherently? This could be done just as it is done for other articles; if its badly ordered, someone will come along and fix it. If they separate the proofs, by say, including them towards the end of the article, then there should be no problem. It's often said that at least half the insight of a theorem is the proof used to get it.

    2. Re:Sure by killerkalamari · · Score: 5, Insightful

      Why exactly is it not wise? You cite some examples of including more, then your last sentence restates your opinion. Please support your claim that all knowledge shouldn't be included in Wikipedia, for I believe the exact opposite.

      There are some topics which used to be on Wikipedia, but were removed. Why were they removed? "not notable enough". See, that makes no sense to me. I would like to see EVERYTHING (everything that is legal of course) in Wikipedia. Why exclude some bits of human knowledge while including others? Does Wikipedia need more hard drive space or something? I can't imagine that being the reason. Perhaps arcane or highly focused knowledge scares some people. Or, perhaps since they are not intelligent enough to understand it, they decide that it has no value. If there are a bunch of less used articles (since they are unused) it won't be raising bandwidth costs either.

      Recently I went to the "quantum gate" article. There are equations and technical language everywhere. I certainly did not understand it.. I'd first need to read more about the underlying concepts. I hope this disproves my "lack of intelligence" point, but I am not convinced. A while back I went to Wikipedia to learn more about Encyclopodia, and it was useful to me. But then I noticed an RfD. I got lucky when I searched, because now I wouldn't be able to learn what I learned then... the article is gone! Why? Because it was highly focused. Not notable enough for some people. Well, you know what? It was useful information to me.. and now that information has been lost. I consider that a step in the wrong direction.

      Besides math, there is knowledge out there that, while I may be completely uninterested in it (celebrity trivia, for example), some people find fascinating. How about articles on "everyday" people. Does including it make Wikipedia any less useful for me? Absolutely not! I cannot predict the future.. who knows but I may need to know some weird fact, read some proof or book, find some arcane piece of knowledge, read about my friend from high school who I lost contact with. Why limit it?

      Now please don't misunderstand what I'm trying to say. I am not saying that factually incorrect information be included in Wikipedia as if it were fact... or sarcasm, etc. We're talking about knowledge here, not fantasy.

      There are already user pages for personal information as well, in case people are concerned with Wikipedia turning into MySpace or something.

      So I ask again.. why not include everything?

    3. Re:Sure by Anonymous Coward · · Score: 5, Insightful

      Wikipedia has been ruined by self-importance. The idea is cool beyond imagining - why *not* put all of human knowledge (even "fancruft") in one searchable, categorizable archive?
      See, you've just demonstrated once more that the people who whine about Wikipedia are the people who don't understand Wikipedia.

      I realise this appears to be a difficult concept to grasp, but you'll get there if you stretch yourself: Wikipedia is not about creating an archive of all of human knowledge. It is about creating a free online encyclopedia. An encyclopedia is a well-defined type of reference work, not an archive of random facts. There are many things an encyclopedia excludes by design. Mathematical proofs are one of these things.
    4. Re:Sure by Kjella · · Score: 5, Insightful

      It is about creating a free online encyclopedia. An encyclopedia is a well-defined type of reference work, not an archive of random facts. There are many things an encyclopedia excludes by design. Mathematical proofs are one of these things. I guess I don't understand Wikipedia then, because I find it so incredibly useful for all the things I wouldn't find in an encyclopedia. YMMV.
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  2. Yes. by One+Childish+N00b · · Score: 5, Insightful

    They're obvious academic knowledge with clear educational merit. Where exactly is the problem?

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    1. Re:Yes. by Entropius · · Score: 5, Funny

      Can't they just look up the "Malawi" article on ... ... wait...

  3. Re:A mathematicians view by the_other_chewey · · Score: 5, Informative

    I hate reading math symbols in anything but latex generated documents

    No problem for you then: Wikipedia's math content is exactly that.

  4. Heck Yes! by tjstork · · Score: 5, Insightful

    The whole promise of wikipedia is that computers allow us to accumulate an incredible amount of knowledge. There's no need to draw an artificial line and say "no, you can't have this, because, book form encyclopedias don't have it". If volunteers were willing, it ought to have proofs. And, also it would be good if it had experiments in the other sciences as well. It would certainly make discussions over GW and evolution more accessible to more people as well. How does one infer historic atmospheric chemistry? How does one understand the genetics of evolution? Right now, a lot of this stuff is locked up in scientific journals and these are invariably organized more by article. Wikipedia could, hypothetically, allow us to apply a taxonomy to all of human knowledge. Donations welcome.

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  5. Ridiculous by ytm · · Score: 5, Insightful

    It seems that admins are recently too happy with removing information from wiki, than adding it.

    Mathematical proofs are as much important and informative as their theorems. The proof allows for better understanding of the theorem, you can see why there are certain assumptions in the theorem and what is broken when these assumptions are not met. For some applications the proof is a blueprint for algorithm to solve problem stated in the theorem.

    But I guess that biographies of fictional characters and detailed descriptions of Japanese cartoon episodes have much more important place on wikipedia.

  6. Re:Dictionary - Encyclopedia - Textbook by wren337 · · Score: 5, Insightful

    The usual arguments for brevity don't apply here - are you worried about the "book" getting too "thick"?

    They've started something - a compendium of knowledge - and they're preventing it from growing because they want it to fit a publishing model that no longer applies. Why limit yourself?

  7. Right. More of this. by Garse+Janacek · · Score: 5, Insightful

    Wikipedia has allowed mathematical proofs, for several years. I've found several of them useful, as it sometimes has nice proofs that would otherwise have been troublesome to track down without a more detailed literature search. I know other people who have found them useful as well. The fact that this useful information is now being opposed by some (including, apparently, the submitter) on the basis of "OMG, if we allow proofs, then there might be too many proofs, and then how will we stop it?!" is highly irritating to me. Proofs have been allowed for years without overwhelming the rest of the useful information. Wikipedia has not become a repository for opaque, useless 200-page proofs. Why are we suddenly worried about this? If you're really concerned, just put the proof on a separate page from the main theorem.

    I still have never seen a coherent explanation of why Wikipedia is so concerned lately about deleting any material that is unworthy. It has greatly reduced the site's utility to me, and is the reason I use it less and less, and will refuse to contribute to its fund raisers until their deletion policy is substantially revised. The only explanation I've ever seen is a sort of question-begging, "But if we allow non-notable information without deleting it, then there will be non-notable information there!" Yes, so? Here's a nickel, kid, buy yourself a bigger hard drive. If you want to make "non-notable" information appear lower in search results, fine. That's useful. But a lot of information that I find useful is apparently now considered "non-notable" by the Wikipedia admins, and I'd rather there still be some way for me to find that information.

    Also, what's with the policy of hassling articles with trivia sections? That seems so arbitrary to me. It's frequently a useful place to collect interesting information about the subject that doesn't fit neatly in earlier sections (and "if it's notable, you should merge it into the main article!" is just silly -- we should awkwardly insert this single notable and interesting factoid into an unrelated earlier section? That just makes it harder to find for those who care, whereas the people reading the earlier section will wonder why the subject jumps around. Trivia sections allow for cleaner editing and easier information searches.) Again, what is the harm in it being there? If you don't care about trivia, you don't have to read the section. And, again, if it bothers you that much, just put it on a separate page.

    I'm a little bitter about this whole thing. Wikipedia used to be such a great resource, but lately all I hear is admins talking about ways to block useless information (for certain definitions of "useless"), not about how to actually strengthen the material that's there. Pretty soon, teachers won't have to tell kids not to cite Wikipedia....

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    1. Re:Right. More of this. by Garse+Janacek · · Score: 5, Insightful

      There's a difference between saying "Information should be cited and with neutral POV" (with which I agree), and "Information should be cited and with neutral POV, so trivia sections are bad" (which seems like a non sequitur). If trivia sections were allowed, but with the same requirements as the rest of the article, I'd have no complaint. Instead I keep seeing useful trivia sections (or no longer seeing them...) with ugly banners saying they shouldn't be there. It just reinforces the growing perception of Wikipedia admins as gatekeepers trying to keep information out rather than in.

      trivia are by definition not notable, otherwise they wouldn't be trivia.

      Yeah, I've also heard this argument. It conflates the formal definition of "trivia" (i.e. something unimportant) with the actual conventional use of the term (i.e. a small piece of information). I have trouble accepting good faith in those who make this conflation, since it's so self-evident -- if there are two possible meanings of a word, and one of them makes a sentence false by definition, try using the other one. However, assuming you are making this argument in good faith, let me clarify: when people talk about the notability of information in "trivia" sections, they are usually using the latter definition. Since this definition encompasses, just for example, every question/answer ever made on Jeopardy! or Trivial Pursuit, I'd certainly hope there would be a place for that sort of "trivia" on Wikipedia.

      I've seen several articles getting their trivia sections removed or "integrated", and I must say it was an improvement.

      I'll see your anecdote and raise you another -- I've seen useful trivia sections removed, or poor integration attempts, or ugly banners telling me that the useful information I'm reading shouldn't be there. It is appropriate to apply the same editorial guidelines to trivia sections as to the rest of the article. But there's no reason to make a blanket "discouragement" in cases where it really is the appropriate choice.

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  8. The crazy wikipedia admins.... by Raisey-raison · · Score: 5, Insightful

    Part of the problem is the insistence in Wikipedia that it cannot contain x,y or z. Here there is some rule that 'Wikipedia is not a manual, guidebook, or textbook.' It's very difficult to argue with people about this. When you point out that since wikipedia is not a paper encyclopedia it can contain a lot more information than a regular one and therefore can have characteristics of a textbook you get circular reasoning of 'Wikipedia is not a manual, guidebook, or textbook.' If you dare to ask to change the policy people say there is already consensus.

    But this 'consensus' is 'weird'. Sometimes even when there is a clear majority in favor of saving some article or changing some policy admins will say that 'Wikipedia is not a democracy.' If you then ask well what does determine it you also end up with a tautology. I once asked someone why they wanted to delete article x and they said they were a 'deletionist'. Again I asked why and ended up with circular reasoning.

    As far as this issue is concerned I think without proofs you are missing a whole lot in math. This also makes Wikipedia a difficult forum to discuss math and science in terms of what goes into an article. As someone in this area I often try to explain to people that their idea about y or z here is doesn't work because of some scientific concept.

    The problems occur when they consider their generalist approach most important even if they are ignorant of the topic area. For example I might be talking about Unsolved problems in biology or Unsolved problems in medicine. Well to really address the issue you need expertise in that area. Generalists without it go in and presume to understand what is an unsolved problem in a field in which they lack knowledge. I heard all sorts of bizarre ideas from people in the unsolved problems in chemistry deletion debate about the 'nature' of chemistry, how chemistry itself was not very precise and easy to define. It's so crazy because Science magazine had a whole issue on the topic of big unsolved problems in chemistry. Oh well I guess those people who are actually scientists just don't get chemistry in the same way as a wikipedia admin.

    It gets really crazy in that although the above articles got deleted enough people kicked up a fuss to save unsolved problems in neuroscience, unsolved problems in chemistry and unsolved problems in economics to save them. To really converse on these issues you have to really understand neuroscinece but wikipedia admins seem to think not. They play sneaky games. If they can't delete them the first time around keep on referring it for deletion. They did this with Unsolved problems in biology here and here. Then if you try to recreate the article you get slapped down by an admin because the article has already been deleted so you lose not matter what.

    I finally gave up on getting any logical argument from the admins when I pointed out that if unsolved problems in neuroscience could exist then why not have unsolved problems in biology. I even talked to some practicing biologists about what these problems might be and low and behold they gave me some. Then the admins said well its not biology, its really biochemistry. Then I asked well why not have Unsolved problems in biochemistry. And it went

  9. Re:proof should be most simple by blind+biker · · Score: 5, Interesting

    How would you know there aren't enough experts checking a certain information? Of course, IF YOU DELETE IT then you made sure there isn't anyone reading it and checking it.

    So if you have something like a mathematical proof, and noone modifies it, is that a sign that nobody understands it, or that it's correct? I would guess the latter, but even if not, I would not go on deleting it just because I sustepct something. Who am I to delete stuff that smarter people than me have written?

    Or do you mean to say that the basis/policy on which Wikipedia works is admins who are ignorant about topic X will delete articles about topic X?

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