Thursday, November 17, 2011

Why I Trust Wikipedia

Wikipedia has become an enormously important way of sharing information. It's used by everyone from elementary school students to doctors and CEOs. However, it seems to be a commonly held belief that Wikipedia is not an accurate resource. Most schools don't accept Wikipedia as a citation for reports; some even specify that "any website except Wikipedia" can be used. Why is it so many people don't trust Wikipedia? And, more importantly, are they right not to?

Wikipedia is not perfect, of course— but I intend to show in this post that it is one of the best and most reliable sources on the internet. I'll start by responding to some of the common arguments against Wikipedia.

"Wikipedia can be edited by anyone at any time, and is therefore unreliable."

This is probably the most common argument out there. Yes, it's true that anybody with an internet connection can edit Wikipedia. Yes, there's always the possibility that a vandal decides to deface a page the moment before a reader views it. This, however, doesn't discredit the reliability of the entire encyclopædia. Here's why.
  • Edits to Wikipedia are constantly being monitored. There are hundreds of people watching the recent changes feed at any given time. There are counter-vandalism programs like Huggle, Twinkle, and others which many people make use of. On top of that, there are many readers looking through pages on Wikipedia who will remove any vandalism they find.
  • Edits by anonymous users are automatically flagged as suspicious. It's true that anyone can edit Wikipedia, but those that do so without registering for an account (so-called IP Users, since their IP is displayed in place of a username) risk having their edits removed simply due to the fact that they don't have a reputation in the Wikipedia community. If an anonymous user adds content that is unsourced, it is far more likely to be removed than if an established user does so. If an anonymous user hopes for his or her edits to remain on Wikipedia, the edits should be accompanied with a link to a relevant policy page justifying them. It's common to see edit summaries like "Miscellaneous information section removed as per WP:TRIVIA." If an anonymous user makes a change and doesn't include a good edit summary, their change probably won't last longer than a few seconds. Edits are more likely to persist if they're made by established users who have a good reputation in the Wikipedia community.
  • Users identified as vandals are blocked. If a user (whether anonymous or logged in) makes an edit that is identified as vandalism and is then reverted, the user usually receives a warning on their talk page. The warning messages increase in severity with each unconstructive edit until the user is reported as a vandal and blocked from editing by an administrator. If they're an anonymous user, their IP is blocked. There have been cases where entire schools and offices have been blocked because someone using the IP repeatedly vandalized Wikipedia.
  • There are bots on Wikipedia to immediately revert changes that are clearly vandalism. Examples include edits which insert strings of profanity or random sexual words throughout the page. Edits like this are flagged by bots like ClueBot right away and removed. These bots also have the ability to warn users and request blocks.
  • Edits which are detected as being suspicious are flagged by the software. There are a number of reasons why the MediaWiki software might flag an edit as suspicious; perhaps the editor only joined Wikipedia today, or their IP address has a history of vandalism, or the edit blanked large sections of the page, or the edit contained some links to external sites. Edits like this are marked with a red exclamation point on the recent changes feed so that reviewers will pay them extra attention. The edit can only be unflagged if an established user marks it as patrolled.
  • Pages which are likely to be vandalized or have been vandalized a lot are restricted from editing. The process is called page protection, and it restricts any anonymous users (as well as users whose accounts are less than four days old or have less than ten edits) from making any changes to the page. Pages about controversial subjects (such as politics or abortion) are frequently protected in anticipation of vandalism. So, the belief that anyone can edit anything on Wikipedia is not entirely true.
  • Wikipedia requires valid sources. If significant content is added to a page without a citation, it is removed, or at least annotated with the infamous [citation needed] template. Often, citations (and their corresponding facts) are removed because they are not reputable or reliable enough. Articles with only one citation are either deleted or modified to include a bunch of flags and disclaimers at the top (for an example, see the page on Mandingo Theory; at the time of posting, there are quite a few disclaiming templates at the top). There are actually a lot of other templates like the citation needed one which indicate a problem with a statement or section (see here).
"Content on Wikipedia isn't peer-reviewed."

This argument is commonly used in contrasting Wikipedia with academic journals and print encyclopædias. It's true that a scholarly article written by someone with a Ph.D. in the subject will probably be more reliable than a Wikipedia article on the same subject. However, a mistake on Wikipedia will certainly be corrected sooner than a mistake in a scholarly article. Wikipedia may not always be peer-reviewed by academics, but whether it's better to have an article reviewed by two or three graduate students or 90,000 non-graduate editors is up for debate.

On that note, there is still some degree of professional peer-review on Wikipedia. Articles about very specific or complex topics are often fitted with a template stating they are in need of attention from an expert.  The template is removed when someone with a degree in the field reviews and edits the article.

Long story short, while you probably shouldn't refer to Wikipedia if you're about to attempt brain surgery or defuse a bomb, it's certainly reliable and accurate enough for more common usage.

When it comes to comparing Wikipedia with other encyclopædias, there has been a lot of research done into the comparison of Wikipedia and Encyclopædia Britannica which I'll discuss in the next section. 

"There are many articles on Wikipedia that are poorly written."

This is a rather weak argument for a number of reasons. Consider:

  • There are many articles on Wikipedia that are written very well. See the list of Featured Articles for some examples. The fact that there are many poor-quality articles on Wikipedia is a product of the fact that there are many articles on Wikipedia. By nature, articles which are searched more and draw more public interest (and are hence more important) are the ones which are more comprehensive and accurate. The article on a random high school in Ohio might not be the most lengthy or accurate, but the article on maple syrup certainly is. What matters more than number of errors or poor-quality articles is the ratio of good articles to bad and the ratio of correct facts to incorrect facts. One way to quantitatively rate these ratios on Wikipedia is to compare it to another encyclopædia.
  • Wikipedia has less errors per word than the peer-reviewed Encyclopædia Britannica. Check out the study done by Nature in 2005 comparing the two. This isn't meant to criticize EB, but rather to illustrate why the Wikipedia approach to information sharing is superior. If an error is found in EB, it will probably last at least a couple of weeks, if it's even found in the first place. Errors on Wikipedia are a) far more likely to be found, and b) much easier to correct.
I'll probably be updating this entry to add refutes to other common arguments against Wikipedia, but currently this entry is in its original form.

© Nicholas Klose, 2011. Copyleft: The text of this post is available for modification and reuse under the terms of the Creative Commons Attribution-Sharealike 3.0 Unported License and the GNU Free Documentation License. This license applies to this post only, so that it may be shared on Wikipedia. It does not apply to other posts on nicholasklose.com.

Tuesday, October 4, 2011

Randomness and Determinism


My thoughts here are adapted from my earlier post, Omniscient Machines. This is (in my opinion) a clearer and more refined explanation of my stance on determinism. After discussing it at length with my peers for several years, I've been able to weed out some of the logical issues and explain it in a more concise manner.
Can science prove or disprove determinism?


If so, it must first prove or disprove the concept of randomness. I'm defining determinism as the belief that everything in the timeline of the universe was predetermined as soon as the Big Bang happened, and I'm defining randomness as the concept that some things can happen spontaneously and without cause. If something happens "randomly", that technically means it had no cause at all, it "just happened". Determinism, by definition, requires that every event which occurs had a cause (and will have an effect). If it's possible for anything to happen randomly, determinism is false.
So is randomness real?
At first you might say yes, of course it is-- and you might provide examples like the rolling of a die, or the use of a random number generator. I'd argue that those things aren't really random, though. In throwing a die, if you were to throw it with a known force at a known trajectory, and if you had measured other variables like air currents in the area and the restitution between the dice and the surface onto which it's being thrown, you could calculate with certainty what number it would land on. Thus, it's possible to predict the outcome of a dice throw before it occurs, meaning the throw isn't truly random. What about a random number generator, though? Actually, these aren't truly random either-- when a computer generates a random number, it must first be given a "seed" to run through a complex series of algorithms and computations, after which the "random" number is generated. This seed is usually given by the current time in seconds (or miliseconds, microseconds, etc.) because it's always changing, ensuring the number generated isn't always the same. One popular "true random number generator" at http://www.random.org/ uses atmospheric noise as its seed. But, if the generator is given the same seed twice, it will always generate the same number each time. So, you can predict the number that will be generated as long as you know the seed-- and in this case, the seed can be treated as the cause of the number generated. You can use similar arguments to show that the winning of a lottery or the spinning of the Wheel of Fortune aren't examples of true randomness either.
A counterexample to the above argument is quantum mechanics; the idea that when a particle is in a quantum state, the state it chooses when the waveform is collapsed is completely random. If that's true, then yes, determinism is false. But we still have a very limited understanding of quantum mechanics. We interpret the state chosen as being random, but perhaps that's a result of our model being too simple or of us making false assumptions. If so, quantum mechanics is as pseudo-random as all of the examples in the above paragraph.
If nothing is random, then nothing happens without a cause or a reason. If that's true, then everything that has happened and will happen in the timeline of the universe was determined during the big bang. Ergo, determinism is true.
Generally, people resist the notion of everything being predetermined because it makes life seem purposeless. This seems rather depressing. I'd argue that it's possible to be a determinist, but at the same time believe that life is far from purposeless. Just because everything that happens is determined doesn't mean that we can build a machine to predict the future. To do so, we would need a supercomputer capable of observing and cataloging all of the information in the universe. This is, of course, impossible for many reasons, but perhaps the biggest issue is that this computer would have to exist in another universe, otherwise you'd end up with the recursive issue of having to catalog the information in the computer itself. So, even though the choices you'll make and the future you'll have has already been decided, you can't possibly know anything about this, meaning you still get the excitement of having to wait to find out (which I think is the main qualm people have with determinism). Of course, determinism implies you don't really have free will-- but all that means is that every decision you make is the result of everything that has happened in your life, as well as your biology. Logic dictates everything. It means you'll never make a decision for no reason at all-- and is that really a bad thing?

Sunday, September 18, 2011

Graffiti as a Form of Communication and Art

This is a modified version of an essay I wrote for English 102 on March 16, 2011.  If you'd like to see the original essay, message me.



What qualities does something need to have in order to be called "art"? Most people will agree that paintings, sketches, sculptures, and the like can definitely be considered art. Can you call graffiti art, then? Often, it's seen by the public as little more than an offensive nuisance found in dingy neighbourhoods riddled with crime. It is seen as a mark of societal breakdown, anarchy, and a sign that those living in nearby residences “just don’t care.” Personally, I think graffiti deserves more consideration by society.

I'm not saying the common perception of graffiti is unfounded. It's rather unsurprising that these anonymous painted messages are seen in such an unfavourable light, especially in the case of “fairly useless, or even damaging graffiti: stupid racist remarks, empty slogans, illegible signatures or comments like ‘Nick and Gloria sparkle’ ” (Boyd, 246). Because this sort of thing is seen everywhere, I think it taints the public view of the art form— and yes, I do think in some cases it can be called an art form. A lot of graffiti isn't stupid or useless at all— much of it is sophisticated and political. Alex Boyd (A Canadian poet/essayist, by the way) mentions that a lot of graffiti is probably created by young, poor people who have no place to call home, as an act of protest against home-owners and business-owners: “Those of us who are most opposed to it … can afford to own at least a home if not other buildings, and take offense to anyone who would stain it” (Boyd, 247). I think this is probably the reason for the association between low-income neighbourhoods and graffiti, and is also why land owners who are victims of graffiti refer to the creators as vandals. Sometimes, they go so far as to call their spray cans as weapons of destruction. “If it allows those who have less to be articulate, and critical of those who have more, naturally anyone in the better position will see it as a ‘weapon’ ” (Boyd, 247).

Think on that last quote for a moment, and try to put it into a political context. This explains why anonymous graffiti is common in parts of the world where free speech is limited or banned. In places like El Salvador, “graffiti becomes an affordable, accessible method of communication” (Boyd, 246). Is it still vandalism, then, or is it more of a demonstration against censorship, dictatorship, and closed-mindedness? Graffiti can be used to publicize political views or to protest against oppression. A proponent of free speech can't be opposed to this kind of graffiti, or consider it vandalism.

Graffiti is different from advertisements and signs in that it has the potential to be interactive and change over time. While advertisements are intended to be static, remaining the same until they are removed, there are accounts of full conversations taking place using graffiti alone. In Scotland, “a public debate had taken place entirely through graffiti … resulting in a permanently posted conversation” (Boyd, 246). Another account tells of a graffiti writer who “began work on a large piece one night but left before completing it when he heard a noise. He returned the following evening to finish the painting when he found,  ‘Just Missed You – Wait Till Next Time – The Watchman,’ written on it” (Castleman, 43). The most important difference, though, is that graffiti, unlike advertisements, isn't fuelled by money. The purpose of the message is the message itself.

Graffiti can be interpreted in a historical context, as well. Interestingly, in the twelfth century, graffiti very similar to that found today was left on the inside of a tomb by Norsemen (Boyd, 246). In some contexts, it can be seen as a territorial marker— “territorial graffiti have an identical function at the neighbourhood scale, that of ascribing a proprietary meaning to space” (Ley & Cybriwsky, 504).  Leaving a message like “Dave was here” in an alleyway taps into the same part of the human psyche as sticking a flag in the ground of some unclaimed land, the top of a mountain, or the moon. It's human nature to expand one's territory. Graffiti is seen by many as an effective way of establishing boundaries, whether personal, physical, political, or societal.

 Again, I'm not saying graffiti can't be harmful. I only hope to show that it has the potential to be more than a nuisance with negative connotations. While it is commonly seen as a product of high crime rates and the breakdown of society, it can in fact be a product instead of human nature and cultural development. While some graffiti is indeed vandalism and has no real significance, much of it is a form of communication and art, and should be treated as such.


Works Cited:

  • Boyd, Alex. “In Defense of Graffiti.” 2006. Steps to Writing Well with Additional Readings. Eds. Jean Wyrick and Sanka P. Bose. Toronto: Nelson, 2011. 245-248.
  • Castleman, Craig. “Getting Up: Subway Graffiti in New York.” 1982. Cambridge, Mass. and London: MIT Press. 
  • Ley, David and Cybriwsky, Roman. “Urban Graffiti as Territorial Markers.” 1974. Annals of the Association of American Geographers. Vol. 64, No. 4. 491-505.


Update?!

So, I'm bringing this blog back from the dead. In case you're still viewing this on the original Blogger domain, you can actually read this blog now on my personal domain, http://nicholasklose.com/.

I'll be posting some of my journal entries here (the less personal ones, at least) for your reading pleasure. Most of them are centered around philosophical questions about physics, math, and science, hence the new title Enigmas and Conundrums which I find fitting (although, I admit the real reason I chose is is just because it sounded cool).

I'll try and improve on my historical bi-yearly posting, a feat which won't really be all that impressive since I technically only need to post three times to call it an improvement. I'll be reading/replying to comments regularly, if there are any.

Cheers!