Living with low light

For those interested in digital photography, you can find a good set of very comprehensible suggestions on the Lens & Shutter website. Judging by the photos you see on Facebook, I would say that the one on flash use is the most essential piece of reading for most amateur digital photographers. As highlighted in Philip Greenspun’s good free tutorial, awareness of light is critical to all good photography.

Reading about photography frequently makes me miss my tripod, which is back in Vancouver. (It makes a cameo in a relatively bad photo of Astrid.) I should get a little one so that I can actually aim my camera when I use it in timer mode on a solid surface, rather than just shooting straight up or at whatever angle the surface allows.

PS. Despite my love of wide angle, and hence aversion to digital SLRs with small sensors, my heart is definitely softening towards something like the Rebel XTi. That said, my dSLR fund is only worth about 36% of the price of that kit, and seems unlikely to expand prior to my departure from Oxford.

Perspective

The following is simply plagiarized, from Carl Sagan, but it is nonetheless quite important. Back in my insomniac elementary school days (as opposed to my insomniac graduate school days), I remember reading quite a number of his books. The non-fiction ones tended to be particularly interesting and well illustrated. These specific observations of his have always struck me as especially poignant:

The Earth from deep space

We succeeded in taking that picture [from deep space], and, if you look at it, you see a dot. That’s here. That’s home. That’s us. On it, everyone you ever heard of, every human being who ever lived, lived out their lives. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilizations, every king and peasant, every young couple in love, every hopeful child, every mother and father, every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam.

The earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors so that in glory and in triumph they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of the dot on scarcely distinguishable inhabitants of some other corner of the dot. How frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light.

Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity — in all this vastness — there is no hint that help will come from elsewhere to save us from ourselves. It is up to us. It’s been said that astronomy is a humbling, and I might add, a character-building experience. To my mind, there is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly and compassionately with one another and to preserve and cherish that pale blue dot, the only home we’ve ever known.

This is an expression that I expect would be inspiring, humbling, and amazing for any human being.

Cognitive boundaries

Eye Boss, in a Link to the Past

Sometimes, I wonder whether I should be disturbed that there are dozens of video games I know by heart. I mean that, after not playing them for five years or more, I know exactly which block needs to be pushed, what sequence of answers needs to be given in a run of questioning. The situation is altogether uncanny: you see the little girl made of thirty pixels and you know the instant you see her that she will ask you about her cat: this in a game that you last played in your friend’s basement when you had never had a sip of beer or wine and didn’t know what continent Oxford was on. It is like some kind of insane mockery of my inability to remember the three or four main points in the forty page article that I just read.

Human brains have not evolved for this ‘unknown person 31’ said ‘position 16/34’ on ‘topic 8041D’ style of interaction with data. I would venture to say that we are better suited to the ‘if it flashes, hit it with that weapon more’ style of interaction with data.

Wiki restriction in progress

The wiki came under discussion in today’s seminar. As such, it is offline until such a time as I can come up with a robust way to restrict access to seminar notes, while leaving all the material that I have been producing myself available.

Ideally, I would like to either make specific pages of the wiki require a password to access or, alternatively, restrict certain pages to specific user accounts. If anyone knows how to do this elegantly, please let me know.

I expect that I should have my portions available again by Monday. If you care to report any bugs on the blog between now and then, feel free to do so as a comment to this post.

[Update: 4:30pm] Much more quickly than expected, I have been able to establish a content management system for the wiki that allows certain pages to be restricted from public access. This treatment has now been applied to seminar notes from the thesis seminar and the Developing World seminar. It has not been applied to my reading notes, notes related to public lectures, or other such pages. As with any such change (one that requires me to edit PHP script and MySQL database settings), please report any bugs that you encounter.

Once again, I must say that I am impressed with MediaWiki as a platform. All I did was backup the MySQL database and the /images/ folder, erase the old install (except for LocalSettings.php), install a patched version of MediaWiki, run the installer, throw out the config file it generated, add the restriction patch code to the old config file, and then configure user accounts to have access to restriction features. That may sound very tricky to a lot of people, but it was actually a breeze. The whole thing was done in half an hour, with no hiccups discovered so far. Now that it is publicly known, the Lecture and Seminar Notes section of the wiki has graduated out of the experimental grouping.

Quebec and nationhood

First Ignatieff said it, and now Stephen Harper has: ‘Quebec is a nation.’

The claim is a tricky one, for a number of reasons. ‘Quebec’ is a federal component of Canada: a province granted particular jurisdictions and roles under Canadian law. Like some other parts of the country, it includes a minority population with unique linguistic, educational, and other concerns. While I am perfectly willing to accept that French Canadians may constitute a “large aggregate of communities and individuals united by factors such as common descent, language, culture, history, or occupation of the same territory, so as to form a distinct people,” to take the definition from the OED, it is clear that Quebec is not synonymous with French Canadians.

The French Canadian nation does not occupy Quebec to the exclusion of other groups. There are Anglophone Canadians, recent immigrants, members of the First Nations, and others. Some, like the Cree, have considerable historical precedence over the settlers of New France; other have arrived recently enough to be subject to the special language laws the province has enacted in recent decades. Just as French Canadians must be given appropriate treatment within the wider federation of Canada, so too do other minority groups within Quebec deserve to be treated with fairness and due consideration under the law. Empowering the government of Quebec with special rights to represent the French Canadian nation must not diminish its obligation to honour the rights of other groups within the province.

The French Canadian nation (if it makes sense to treat it monolithically), is also not confined within the borders of the province of Quebec. New Brunswick is officially bilingual, and there are French speakers and people of French descent throughout the entire country. As such, dealing with Quebec and dealing with the full ramifications of that minority issue are not one and the same.

It will be interesting to see what, if any, concrete policy developments will arise as the result of these declarations. I do not think that recognizing French Canada as a nation, in the sense quoted above, is a threat to the integrity of Canada any more than recognizing the rights of First Nations peoples has been. Being able to accommodate different groups with competing claims is, after all, the root purpose of federalism. Given demographic shifts in Quebec, it makes less and less sense to conflate the issue of French Canadian identity with that geographic zone. Hopefully, the declarations from Ignatieff and Harper have just been pragmatic recognitions of the above.

Replace generic blog templates

Folding bicycle

As more and more friends and colleagues set up blogs, it becomes harder to distinguish between so many identical looking pages. While the default Blogger templates are generally attractive, they have now been used so many times that anything written on one automatically looks generic.

A good template should, above all, be clear and readable. Next, it helps for it to look stylish and professional as well. While it is beyond the means of most beginner bloggers to create their own template, there are masses available to be downloaded for free. Regardless of whether you use Blogger, WordPress, or something else, changing your template is a quick way to make your blog more distinctive and memorable.

If you want to see the snazziest of templates (though many are more beautiful than usable), have a look at Zen Garden.

Listed below are a few places where decent, free templates can be picked up. Dozens more can be found in less than a minute, through Google.

For Blogger:

You can easily find instructions online on how to change your Blogger template. One thing to note: because Blogger generates every page of your blog in advance, before they are requested, you will need to republish the whole blog before the template will appear everywhere.

For WordPress:

There are so many such sites, and they are so easy to find, that it is almost pointless to list them. Instructions for changing WordPress themes are likewise easily available.

If you are using a system other than Blogger or WordPress, Google and ye shall find. You can also find some basic tutorials on customizing a template that you find, so as to make it individualized. Here is an example.

Bedside thesis reading pile now 100% taller

At Tristan’s urging, I have added a thick collection of philosophy of science books to my thesis reading stack. At 212 pages, Thomas Kuhn‘s The Structure of Scientific Revolutions looks fairly reasonable. Rather more daunting are the two square books by Karl Popper: Conjectures and Refutations at 580 pages, and The Logic of Scientific Discovery at 513. Popper and Kuhn are the two names that have come up again and again when I discuss this project with people and, judging by the blurbs on the back and a scan of the introductions, these are the three more relevant books by them in the vast shelves of the Norrington Room at Blackwell’s.

Collectively, they are about ten times longer than my thesis will be. My hopes, in reading them, are to avoid embarrassing myself with ignorance of the philosophy of science, at a minimum, and to generate some interesting ideas, from a more optimistic perspective. Notes on all three will appear on the wiki, as I progress through them. I will begin with the Kuhn, once I have dealt with this week’s reading for tomorrow’s seminar, and the preparation of something to say about the thesis project with Dr. Hurrell on Friday.

Another arboreal post

Wadham College Tree of Heaven, trimmed

The Tree of Heaven (Ailanthus altissima) in the Wadham Back Quad has been radically pruned. To begin with, it got a warning sign (and the first jokes began circulating about the killer tree). Next, it got a very ugly ad hoc fence surrounding it. Now, all of the branches have been lopped off, such that they terminate in flat segments about five or six inches in diameter. The gardeners are apparently saying that it will not die, though I find it hard to imagine how or where it will be growing any leaves in the spring.

To give some sense of scale, the tree must be about 30m high. You can see the top portion above the roof of the main quad, when you are standing at the far side. In its present state, it makes the Back Quad look especially bleak during our 4:30pm sunsets.

PS. I modified today’s photo in the same way as a previously posted one of the same tree to illustrate the contrast.

Camera phones and police brutality

One very considerable advantage of the greater dissemination of video phones is increased ability to effectively document police brutality and other abuses of power. A recent example example involves UCLA police officers gratuitously using tazers on students in a library. While that situation cannot be entirely understood from the YouTube video, it supports testimony given elsewhere that the use of force was excessive and inappropriate. Hopefully, these tazer-happy UCLA police officers will end up in jail. At least one other incident filmed with a camera phone and uploaded to YouTube is being investigated by the FBI. That incident is also discussed in this editorial.

As I have said again and again here: protection of the individual from unreasonable or arbitrary power – in the hands of government and its agents – is a crucial part of the individual security of all citizens in democratic states. In a world where normal activities increasingly take place within sight of CCTV cameras, it’s nice to see that recording technology can also work for the protection of individuals or – at least – improve the odds of things being set to rights after abuse takes place.

Just don’t expect for it to be impossible for people to determine whose camera was used to shoot the video. Apparently, output from digital cameras can be linked to the specific unit that produced it.