Jan 192009
 

There is ceasefire in Gaza. Perhaps it will hold for a while.

It may have been precipitated by Israel’s desire to wrap up its military operations before Obama is inaugurated, anticipating that the new administration in Washington will be a lot less sympathetic toward, well, if not necessarily Israel’s cause then certainly the methods that Israel chooses to advance its cause.

It may have been the result of rising doubt and anger among Israelis themselves, those who realize that the history of the Gaza strip did not begin with the Qassam rockets.

Or perhaps they began asking questions like that asked by Time Magazine: Can Israel survive its assault on Gaza?

Or maybe it was compassion. The other day, the assault on Gaza turned from an abstract litany of numbers (last I heard, over 1,100 killed, more than 4,000 wounded, many of them civilians) into something personal, as an Israeli-trained Palestinian doctor, peace activist to boot, who regularly reported on Israeli television via cell phone, was reporting the shelling of his own house and the loss of three of his daughters on live TV.

The biggest irony of any “war on terror” (not just that of Bush, not just that of Olmert) is how, contrary to the stated intent of the war’s leaders, such a war flawlessly serves the terrorists’ interests. Such wars are based on the blatant ignorance of their leaders, leaders who believe that the terrorist is motivated by hatred and a desire to kill. While they are not free of hatred and bloodlust, they are motivated by something else altogether: by a desire to change the political course through their acts of terror. When our leaders declare a “war on terror” in response, they accomplish precisely what the terrorist wants… which is why Bush and Olmert ended harming the interests of their own countries to an extent far greater than anything the terrorists could have accomplished by themselves.

Gavrilo Princip knew this. When he assassinated the arch-duke of Austria-Hungary in 1914, his hatred of a despised leader was outweighed by his the hope that the assassination will change the existing world order and free Serbia from Austrian rule. Princip became one of the most influential (and most successful!) persons of history, not so much as a result of his own actions, but as a result of the predictably stupid reaction of Vienna’s fossilized political leadership. Why are we—the U.S., the Western world, Israel—so bent on repeating that mistake?

 Posted by at 2:10 pm
Jan 182009
 

“John Moffat is not crazy.” These are the opening words of Dan Falk’s new review of John’s book, Reinventing Gravity, which (the review, that is) appeared in the Globe and Mail today. It is an excellent review, and it was a pleasure to see that the sales rank of John’s book immediately went up on amazon.ca. As to the opening sentence… does that mean that I am not crazy either, having worked with John on his gravity theory?

 Posted by at 3:58 am
Jan 162009
 

My uncle, my mother’s younger brother, is dead this morning I am told.

His name was József Sztojka, although I remember him from my childhood as Jóska bácsi, or uncle Jóska. I have many, many, many fond memories of him. He has been suffering from illness for a long time, so his death is not altogether a surprise, but I am saddened nevertheless.

Some random memories.

  • I have a copy of volume 3 of a Hungarian language physics book, Mechanics by Tibor Cholnoky, which was the first book I ever owned that explained in detail how the laws of orbital mechanics can be derived from Newton’s law of gravitation. This book was a gift from Jóska bácsi. I saw it on his bookshelf when I was around 10 or so, and sat down reading it, forgetting about the world. That’s how he found me and that’s when he gave the book to me. Thank you for helping to steer my life in this direction.
  • I loved playing with my cousins, his two children (later three), at Jóska bácsi‘s place. It was the selfishness of childhood (I was no more than 6 or 7 at the time), as it wasn’t family ties but my cousin’s toys that I found the most interesting. But what is most memorable is how Jóska bácsi played with us. He helped us build toy castles and helped us destroy them with toy weapons. He helped us build elaborate tracks for Matchbox cars (oh, how I envied my cousin’s amazing Matchbox car collection!) and helped us race them. Though I never understood why he seemed so offended by my childish attempt at poetry. When one of the Matchbox cars kept oscillating left and right as it went down the track, I attempted to describe this in rhyme with words that may be best translated into English as “wiggled its fanny”. He angrily told me not to say such things again.
  • A relative of my father visited us once from Romania. His family name was Fogas, a word that means, among other things, (coat)hanger in Hungarian. Together with this relative, we went to the flat of Jóska bácsi one day, a flat that was under major renovation at the time. So we rang the doorbell, Jóska bácsi opened the door, and as he never met our distant relative, introductions began. “Fogas,” said our relative, thrusting his right hand out for a handshake, while holding his coat in his left. “We don’t have those yet,” apologized Jóska bácsi
  • I first heard the record At the Speed of Sound by Paul McCartney and the Wings at Jóska bácsi. I also first heard Jeff Wayne’s musical experiment, The War of the Worlds, at his place. I still enjoy listening to both records from time to time, and when I do, I often remember Jóska bácsi.
  • Shortly before I left Hungary, I visited Jóska (by this time, I often omitted the bácsi part) at his cottage north of Budapest. He was already in the habit of spending much of his time alone, like a hermit, in this cottage. I spent a whole evening with him before heading back to town, and we had a long, long conversation about life, universe, and everything. He was a sad man by this time, and I listened to him with the infinite wisdom of youth, certain that I had all the answers, certain that if he only heeded my advice, all would be well.

Well, Jóska bácsi is no more. Only the memories remain.

 Posted by at 2:26 pm
Jan 152009
 

I suppose “brace for impact” are not exactly the words you’re hoping to hear from the pilot when you’re a passenger on board a commercial flight:

US Airways 1549

US Airways 1549

They say the airplane may have struck a bird. Apparantely, everyone got out and from the looks of it, if it doesn’t sink the airplane may be salvagable, too, which would be phenomenal.

 Posted by at 9:16 pm
Jan 152009
 

When I was learning to fly, one of the first things I was taught was the use of checklists. Checklists contain trivial things that are supposedly self-evident. Stuff like this, for the Cessna 172 that I used to fly:

Aircraft position INTO WIND
Brakes APPLY & HOLD
Doors CLOSED & LATCHED
Flight controls FREE & CORRECT
Fuel selector valve BOTH
Elevator trim TAKEOFF

So who in his right mind would forget to close the doors, you might ask, or open a fuel valve? But the fact is, people do, and people died as a result. Pilots, gung-ho folks that they are, were nevertheless humble enough to realize this, and the use of checklists has been common practice pretty much since the dawn of flying.

Unfortunately, the same cannot be said for hospital operating rooms. It seems that surgical death rates can be cut by up to one third through the simple use of a checklist… so why hasn’t this been done before? Is it ignorance, arrogance by the medical community, or a combination of both?

In any case, introducing checklists in operating rooms is a no-cost improvement that can save billions of dollars a year not to mention a number of lives.

 Posted by at 6:09 pm
Jan 152009
 

Not quite the twin towers, but sights like this will likely evoke similar feelings of anger in many Arabs and non-Arabs alike:

Gaza burning

Gaza burning

Israel says that the attack on a UN compound was an accident. Israel says that the attack on this building, housing news organizations, was an accident. Israel says that the killing of hundreds of civilians was just accidental, “collateral damage”. Yes, I believe in the tooth fairy, too.

But even if I did believe them… why is it that as soon as you make civilized noises about it, and use euphemisms like “collateral damage”, suddenly mass murder becomes acceptable?

Meanwhile, the BBC showed pictures of the wife of Syrian president al-Assad touring a Palestinian refugree camp… with her head pointedly not covered by a scarf or other headwear. This was seen as an indication that even Syria is now worried about the rise of Islamic fundamentalism in response to Israel’s attack on Gaza. Which raises the same question that was raised by Bush’s attack on Iraq, which boosted Iran’s influence in the region: just how STUPID are we, using our military in such braindead ways that the ones who benefit the most are our deadliest enemies? What exactly do Bush and the Israeli leadership really want, the rise of the Caliphate? Presently, they’re doing more to realize that dream than all the ayatollahs and all the bin Ladens combined.

 Posted by at 2:32 pm
Jan 152009
 

This is what Windows Vista’s weather gadget told me this morning:

Slightly exaggerated

Slightly exaggerated

Fortunately, it is lying. It’s only -29 outside, not -35. Still, it made me remember fondly the good ole’ days when there was still some global warming…

 Posted by at 2:21 pm
Jan 152009
 

The union of OC Transpo drivers threatened to picket the city’s Para Transpo service if the city brought in additional drivers to deal with increased demand. Para Transpo is not part of OC Transpo. It is a service for the really needy, disabled people for whom walking is not an option, not even when it’s not -30 below, like this morning. By threatening to picket, the union makes once again crystal clear a point that has been obvious since the beginning: their utmost contempt towards the residents of Ottawa. It is for this reason that I support the city’s unwavering position. The drivers had other options, like work-to-rule. By choosing to go on strike in the middle of winter, by choosing to picket sites such as city hall that have nothing to do with transportation, they’ve made their feelings clear towards the nearly one million residents of the city… if we don’t feel compassionate towards their supposedly just cause, they only have themselves to blame.

 Posted by at 2:13 pm
Jan 142009
 

Wow. Look at this temperature gradient between Ottawa and Montreal:

Arctic cold front

Arctic cold front

And while these are wind chill temperatures, the real thing is soon to follow: some stations forecast a temperature of -33 Centigrade Friday morning. Needless to say, global warming is not exactly high on the list of priorities of most people I know.

 Posted by at 5:09 am
Jan 122009
 

I asked a New York friend today, what will they do on Times Square on New Year’s Eve, December 31, 2010?

In the 2000’s, every other person on attending the New Year’s Eve celebrations at Times Square was wearing a pair of 2oox party eyeglasses, with the two zeroes in the middle forming the pair. The same thing worked in the 1990’s (the upper halves of the two 9’s serving the same purpose) and even in the 1980’s (again, the upper halves of the 9 and the 8 doing the same thing.) I have no idea about the 1970’s… that was before my time, I came to North America in 1987.

It’ll still work at the end of this year, because 2010 has two zeroes. But… what will happen at the end of 2010? How will they use the number 2011 to create a pair of New Year’s eyeglasses? That’s what I asked my friend.

He asked me in return why I am worried about such things. “I am worried about the future,” I told him, “aren’t you?” “No,” he replied, “not that badly…”

 Posted by at 10:34 pm
Jan 112009
 

I just saw the documentary “I.O.U.S.A.” on CNN. Or, to be precise, I saw the last half hour of it, and then I went to the I.O.U.S.A Web site and viewed the “bite-sized” 30-minute version.

It’s alarming. I am not an American, and our country has so far maintained a modest budget surplus (this year, it may yet turn into a deficit, but perhaps not, as the days of the present government may be numbered) but I am still gravely concerned: a collapse of the U.S. economy or, more precisely, that of the U.S. dollar would make the Great Depression seem like child’s play in comparison.

No wonder many are expecting a near miracle from the incoming Obama administration. That is because it’s abundantly clear that “business as usual” means certain disaster. But what can Obama do? He may be exceptionally talented, but even so, miracles may be beyond his reach.

 Posted by at 10:47 pm
Jan 102009
 

I am test driving Windows 7. Some rough edges (it’s a beta, after all) but I already like it more than I liked Vista. If only Microsoft saw the light and dropped Activation, I might even consider recommending it. One of these days, software companies will realize that penalizing legitimate users is not the right way to fight piracy, but that day has not come yet…

 Posted by at 3:28 am
Jan 082009
 

Watch out, you are being cheated.

Chances are you receive many offers like I do, from credit card companies offering incredibly low interest rates, no fine print, no questions asked, often not even a transaction fee. It makes sense to put these offers to good use, does it not? Or perhaps there is a subtle catch?

Indeed. And subtle it is, not very easy to explain. Let me try to use an example with numbers.

Suppose you have a VISA card and you spend $1,000 on it every month, but you’re like I am, and pay it off at the end of every month. So you don’t even care that the interest rate is high, say, 18.5%, since you never pay any interest (much to the regret of your friendly neighborhood credit card company.) But then comes this hard-to-ignore offer: you can pay off another debt at the low-low interest rate of just 2.99%!

So you do that, pay off a $10,000 debt using your VISA card, figuring that you’d do like before, and pay your $1,000 plus any accrued interest in order to keep your card in good standing. Meanwhile, you ignore the small print that says, in part, that “if you have low rate offers, which apply to a portion of your overall cash advance balance, then your payments are applied to these low rate offer balances first”. Yet this text is critical.

For here is what happens. At the end of your first month, you’ll be owing $11,024.58 to the credit card company: $10,000 was the loan amount, $1,000 is your monthly expenses, and $24.58 is the “low low rate” interest on the $10,000. So you send the credit card company a check for $1,024.58.

The next month, you find that you owe the company $11,036.37. Of this,$22.12 was interest on your low interest loan amount of $9,000 (!), while the rest is your present month’s spending of $1,000 along with high-rate interest at $14.25 on last month’s spending of $1,000. In subsequent months, things get worse: every time you send $1,000 to your credit card company, instead of being applied against your current month’s expenses, it is used to reduce the low-interest debt. In the sixth month, you’d be paying them $1,085.22: $1,000 is what you usually pay, last month’s spending that is, $11.94 is the interest on your preferred loan (now only $4,855.50), while $73.29 is interest on your accumulated high-interest balance of $5,144.50!

Whoa! On average, you will have paid interest at the rate of 6.66%, which is well over twice the advertised rate!

If your monthly spending is higher, things get even worse: at $1,500 a month, your effective interest rate will have increased to 8.53%. Not a very good deal, is it.

The only way to take advantage of a special offer of this kind is with a credit card on which you have no unpaid balance and which you are not using for any other purpose until the loan is repaid. Otherwise, you’ll be paying through your nose.

Here’s a little calculation with Microsoft Excel that demonstrates the six-month payment schedule:

Preferred rate: 2.99%    
Regular rate: 18.50%    
Loan amount: $10,000.00    
Monthly spending: $1,000.00    
         
Low-interest
balance
Interest High-interest
balance
Interest Monthly
payment
$10,000.00 $24.58 $1,000.00 $0.00 -$1,024.58
$9,000.00 $22.12 $2,000.00 $14.25 -$1,036.37
$7,985.75 $19.63 $3,014.25 $28.69 -$1,048.32
$6,957.06 $17.10 $4,042.94 $43.35 -$1,060.45
$5,913.71 $14.54 $5,086.29 $58.21 -$1,072.75
$4,855.50 $11.94 $6,144.50 $73.29 -$1,085.22
    Effective rate:
6.66%
 Posted by at 7:51 pm
Jan 072009
 

Here’s an article worthy of a bookmark:

http://peltiertech.com/Excel/Charts/XYAreaChart2.html

It offers a way to produce a chart in Microsoft Excel much like this one:

Filled XY area chart

Filled XY area chart

This chart is from something I’m working on, an attempt to test gravitational theories against galaxy survey data.

The link above also comes with a warning: the discussed technique doesn’t work with Excel 2007, due to a (presumably unintentional) change in Excel’s handling of certain complex charts. A pity, but it is also a good example why I am trying to maintain my immunity against chronic upgrade-itis. Two decades ago upgrades were important because they fixed severe bugs and offered serious usability improvements. But today? Why on Earth would I want to upgrade to Office 2007 when Office 2003 does everything I need and more, just so that I can re-learn its user interface? Or make Microsoft richer?

 Posted by at 3:51 pm
Jan 062009
 
The Piano Tuner

The Piano Tuner

Years ago I went to a bookstore at Zurich’s international airport and picked up a book to read on the flight, Daniel Mason‘s The Piano Tuner. I began reading then, but I kind of drifted away, never finishing it, putting it aside after I got back home, I never even got halfway. The book was sitting, forgotten, on top of an ever growing pile next to my bed.

Until last week, that is, when I picked it up again. I had to start from the beginning, as I didn’t remember much, just the uniqueness of the story and its atmosphere. This time around, it didn’t take long to get to the last page… despite the 19th century feel and pace, it turned out to be a page-turner after all.

And an unlikely story it is, set in Victorian England, telling the tale of a shy, self-absorbed London piano tuner who gets the most unusual commission of his lifetime: a request by Her Majesty’s War Office to travel to the remotest parts of Burma in order to tune and repair an Erard grand piano.

As it turns out, I’m not the only one who was mesmerized by Mason’s story. Now I hear that a movie is in the works. Not bad for the first novel of a medical student!

 Posted by at 1:36 pm
Jan 042009
 

How many times have we heard statements like this? Most recently, I heard it just moments ago, as an Israeli spokesperson stressed that Israel’s fight is not with the Palestinian people. But, I submit to you, when you kill hundreds of said people, your words are irrelevant: the facts are that your fight is with the people, the Palestinian people in this particular case, as it is the Palestinian people (in particular, innocent Palestinian people who have nothing to do with the Hamas idiots who keep firing rockets into Israel) who’re doing most of the dying.

 Posted by at 3:24 am
Jan 032009
 

I just read this term, “paparazzi physics”, in Scientific American. Recently, several papers were published on the PAMELA result referencing not a published paper, not even an unpublished draft on arxiv.org, but photographs of a set of slides that were shown during a conference presentation. An appropriate description! But, I think “paparazzi physics” can be used also in a broader sense, describing an alarming trend in the physics community to jump on new results long before they’re corroborated, in order to prove or disprove a theory, conventional or otherwise.

 Posted by at 9:16 pm
Jan 022009
 

As a contributor to Maxima, I occasionally receive requests from students to fill out surveys. I got one today, and after completing it, felt obliged to add the following comment, which really applies to most such surveys that I’ve seen:

You seem to be concentrating on things like prestige, reputation, stuff like that that I have no interest in and certainly play no role in my decision to work on an open source project. Simply put, the projects I work on I work on because of what they DO, not because they are open source or not. It’s not a self-serving activity… I no more think of it as “programming” as I think, say, of repairing my computer as “screwdrivering”. Programming (or using a screwdriver) is not the goal, but the means to reach a goal.

I work on Maxima because I need it for my research, because its tensor algebra packages were broken and I was able to repair and maintain them, because I need the result, because by participating I can help ensure that the package remains reliable and useful… what others think of me is irrelevant. I left your last question (ranking roles by prestige) unanswered for this reason… you might as well have asked me to rank them by color.

 Posted by at 5:00 pm
Jan 012009
 

A full nine years after the Y2K bug was to end civilization as we know it, it appears that Microsoft has yet to discover leap years. It seems that many of their Zune music players died a premature death yesterday (though they’re expected to come back to life today) because they were not prepared to deal with years that are 366 days in length.

Not only is this a remarkable case of sloppy programming and quality control, it also highlights why devices with digital rights management are such a bad idea. They’re designed not to serve you, the person who owns the devices and pays for the content played on it, but to serve third party content providers who view you as the enemy. And you actually pay good money for such garbage?

This is why I have yet to purchase an iPod, Zune, or indeed, any other device or software that is designed to police my non-existent file sharing habits.

 Posted by at 3:23 pm