DBus is great, and so is Python—each for their own reasons. One mismatch is that everything passing over the bus must be a message or signal. You wind up with Python code that looks like

proxyobject.SetThis('foo')
bar = proxyobject.GetThat()
proxyobject.DoSomeOtherStuff()

But then you realize the dbus-python binding is very Pythonic, so you can extend it in a Pythonic way. Here's something I banged together in about half an hour:

 import dbus

 class FancyInterface(dbus.Interface):
     """A fancier DBus Interface.

     Derived classes should define a list of strings __dbus_properties__ and a
     _dbus_interface. For every listed property ('foo' …

The third week of my Summer of Code project (separating client and server parts of Getting Things GNOME!) was a busy one.

In some long but well-reasoned discussion on the gtg-contributors mailing list, we reached consensus that the GTG data model will add task duration, and drop an older kind of task ID in favour of UUIDs. The duration field will let users estimate how long it will take them to complete a task or set of tasks. As for UUIDs, the benefit ("universally unique") is in the name!

One other proposal—adding a priority field—is still under …

Following on my last week's work mapping the Getting Things GNOME! data model, week 2 of my GSoC experience involved preparing this somewhat-lengthy analysis of how we store tasks in GTG, and how it should change. Of course, it doesn't hold a candle to things like the 168-page iCalendar RFC…of which a good ten percent is devoted to the recurrence specification grammar for VEVENTs and VTODOs.

Needless to say, I recommended we find a more straightforward way of solving this bug. To make you read the actual analysis, I won't give away my other conclusions here!

I have also …

Hello, Planet GNOME! I'm Paul Kishimoto, working this summer on Getting Things GNOME! as part of Google's Summer of Code. You've already heard from Luca and Karlo, my partners in crime coding.

To complement both Karlo's web-based interface to GTG (which will let you access your tasks from anywhere) and Luca's multi-backend overhaul (which will let you store them anywhere), I will be working on a client-server separation in GTG. If you are interested, you can read details in my work plan.

The possibility of client-server separation in GTG will be largely enabled by the wonderful DBus. Accordingly, I have …

Recently several people have expressed frustration, within hearing range, over infuriating actions of large companies. For example, Apple's practice of generating excessive hype for unremarkable hardware by applying a spot of polish and a kiloton of marketing. Aggressive lawsuits and patent trolling are another instance. Attacks on the reputability of excellent sources of journalism are a third.

The corporation is a paradox. Unlike the human beings that own and work for it, the corporate entity can be physically massive and far-reaching, to the point of incomprehensibility. We are hard-pressed to even picture Toyota's 300,000 employees, or the 9 million …

I have almost finished reading the brilliant book Beyond Growth by the economist Herman Daly. It is worth quoting at length:

We have three economic problems to consider: allocation, distribution and scale.

Allocation refers to the apportioning of resources among alternative product uses—food, bicycles, cars, medical care. An allocation is efficient if it corresponds to effective demand, that is, the relative preferences of the citizens as weighted by their relative incomes, both taken as given. An inefficient allocation will use resources to produce a number of things that people will not buy, and will fail to produce other things …

I stumbled across a short but fascinating work by the 19^th-century philosopher Arthur Schopenhauer called variously the The Art of Controversy or The Art of Being Right. Wikisource has one version; another site has what seems to be the same English text alongside the original German. Read it in full!

His topic is controversial dialectic:

…the art of disputing, and of disputing in such a way as to hold one's own, whether one is in the right or the wrong—per fas et nefas. A man may be objectively in the right, and nevertheless in the eyes of …

Some time ago I stumbled across the following:

Despite the objections of purists and the present high cost, it's clear that this is the way of the future. Reviews point out the sophistication of the electronic control; for example, the cages adjust slightly when cross-shifted (an outer gear at the crank and an inner gear at the rear cassette, or vice versa) to eliminate the familiar rattle. The rear derailleur also overshoots so that the chain is driven into the new gear quickly.

Only professional cyclists could have the finesse to do this through delicate control of …

To avoid the taint of modernity, I'll lie and say that a friend once remarked, apropos of nothing, "'Welcome' mat in an empty field."

Some weeks later, I was walking behind the University of Toronto Press warehouse on Dufferin when I saw the item in question. It was about noon early in the summer, before the oppressive, July-August Toronto heat scorched the colour out of the city. There was a welcome mat sitting on a low, grassy hill, where the back of the warehouse faces G. Ross Lord Park and the West Don River.

What strikes me now is the …

At the risk of stating the obvious, democratic government is unlike running a business in a number of important ways. David Olive gives one of the similarities in his excellent blog at the Toronto Star:

It is the death of any commercial enterprise to starve itself of necessary expenditures on R&D, new-product development and marketing. I'll never understand how today's conservatives fail to make that connection, slavishly devoted as they claim to be to free-market principles. Maybe it's because so few of them have run a business. Or had to make their way in the private sector - as I …

The May issue of The Walrus contained this article by Daniel Stoffman. An illustrative quote:

Because they are amateurs, homegrown terrorists prefer soft, undefended targets — a restaurant rather than a military installation, a bus rather than a hydro dam. And because they are part of the community, they are hard to detect. “We have cases of white Anglo-Saxon Protestants converting to the most radical forms of Islam…"

The author perhaps hopes you will supply your own, "…because we all know white Anglo-Saxons could never be terrorists." The paragraph also opens with one of many misleading or patently false assertions about …

I have been involved in a number of small organizations in which I held either explicit or de facto roles as a director of communications or webmaster. These include the Iron Dragons, the University of Toronto Engineering Society, the Leaders of Tomorrow Working Group (WG) for Engineering Science and later the Graduate WG, as well as project groups for several courses.

As a web development tinker, I have been able to introduce a number of tools to these groups, including:

• [Drupal](http://drupal.org) websites.
• Wikis, using [MoinMoin](http://moinmo.in), [PmWiki](http://pmwiki.org) or [MediaWiki](http://www.mediawiki …

Public policy is a growing personal interest, building on my background in engineering, my morbid fixation with local, provincial and federal politics, and a view for leadership.

This term I have a fascinating graduate course in Engineering & Public Policy at the University of Toronto. While much of the material would likely cause the reader's eyes to glaze over, I hope to write about some situations that motivate the use of policy.

My mother grew up in what was essentially farmland in Aurora, Ontario in the 1950s and '60s. School always involved a long bus ride; the nearest neighbours were miles …

The scabbard wants its negative;
Grip and pommel scarce can guard
The jagged tang, for on it thicker
Clots the knight than foe on blade.

The rifle's flesh to bone is rimed,
Corrupted—fused with like white heat,
Hungry rust or binding frost
As barrel, breech and chamber clog.

Most shrapnel thickly skyward swarms,
Up, swift up the bomb's long arc.
It flies true to the bombardier,
To pierce and burrow, fester, maim.

What youth is not surprised to find—
Loosing anger's early blow—
His nails grown sharper, longer in
The soft palm of his clenchèd hand?

Take up our quarrel with the foe:
To you from failing hands we throw
  The torch; be yours to hold it high.
  If ye break faith with us who die
We shall not sleep, though poppies grow
  In Flanders fields.

—from In Flanders Fields (1915), John McCrae

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If you could hear, at every jolt, the blood
Come gargling from the froth-corrupted lungs,
Obscene as cancer, bitter as the cud
Of vile, incurable sores on innocent tongues,–
My friend, you would not tell with such high zest
To children ardent for some desperate glory,
The old Lie: Dulce et decorum est …

The third of three short items for today concerns Niccolò Machiavelli and The Prince. I read the work for an excellent Modern Western Civilization course in high school, but hadn't seen the text again until an excerpt in Lapham's Quarterly prompted these remarks.

Everyone realizes how praiseworthy it is for a prince to honor his word and to be straightforward rather than crafty in his dealings; nonetheless, contemporary experience shows that princes who have achieved great things have been those who have given their word lightly, who have known how to trick men with their cunning, and who, in the …

Manufacturing jobs in Ontario, the prophesy goes, are disappearing and will soon be extinct. I think this is unnecessarily dire. I recently read a report that Multibrid was weighing manufacturing the turbines for a large wind project in Lake Ontario.

Read the attached brochure from REpower, another Germany company making 5 MW turbines, and note the thirty-two endorsements from presidents of subcontractors and associated companies. Some of those companies do work exclusively in support of wind power manufacturing, which—if the world's third-largest GDP were not enough—should convince you that Germany knows what it is doing in terms of …

The first of three short pieces for today deals with the concept of Tax Freedom Day, which divides the working calendar year in the same proportion as the income tax paid by the average taxpayer (around 40%, in Ontario). Promoted in Canada by the conservative Fraser Institute, it is also highlighted by the Canadian Taxpayers Federation (CTF) with words such as:

Another, albeit more depressing, way to view our tax burden is through the lens of a typical day…after working all morning for Paul Martin, Ernie Eves and Mel Lastman (or substitute your own mayor), it’s time for …

Over the past few months, I have moved almost entirely to LaTeX for word processing. The transition started at the end of AER407 Space Systems Design, when OpenOffice (or my five-year-old desktop) choked on a 200-page document with over 120 figures. While it was too late to transfer that entire report to LaTeX, I now use it even for one- or two-page documents. Why?

• I am accustomed to editing HTML and other source code files and so habitually abstract content from its appearance—exactly the purpose of LaTeX.
• Gedit (a text editor) is much faster to start and even more …

A friend posted the following today:

I'm not going to say much on the upcoming election, mainly out of concern that this post will turn into an undirected, irate rant. Still, the above ad prompted me to scratch a weeks-old itch.

One of the parties in this election is casting its prime ministerial candidate as a strong leader, and attacking his chief competitor as "not a leader." The portrayal includes an effort to conflate demonstrating leadership with exercising authority. This elides the core question regarding positional leadership: are you a leader because of where you sit and the power you …