Thursday, 30 October 2008

An open letter to the Swiss concerning driving on ice and snow

First, let me thank you for allowing me to live in your country; I am happy here. My gratitude makes me want to contribute to the society. One of the areas that I feel I can most usefully is in the matter of driving and road safety. I am not a particularly skilled driver. This lack of skill places me in the same category as most drivers on the road. Realizing that I suffer a lack of skill, and trying to adjust for it, seems to be sadly unusual. I thought maybe I could share some observations about being a safe driver (in the snow) despite a lack of basic driving skill.

The first principle of driving on ice or snow is merely realizing that you are driving on ice or snow. You are not going to be able to stop or steer as responsively as you would be able to otherwise; allow for it. Specifically, drive a bit more slowly, especially before turns, and cut down on the insanely aggressive tail gating. Please.

The next principle follows directly from basic physics:

  1. An object at rest, such as a tree, tends to stay at rest.
  2. An object in motion, such as a moving car, tends to stay in motion.
  3. An object in motion being driven by a person with oatmeal in place of a brain, such as a Porsche Cayenne, tends to run into other objects in motion or objects at rest.

As such, even if you allow for problems when driving, keep in mind most of the people do not. You have to allow not only for your own problems but for those of all the oatmeal brained clowns in your vicinity. Twelve years of driving here suggests this is a rather large group. It seem correlated, but not restricted, to license plates beginning with "AG". I am not sure why.

Next, it is far easier to avoid a problem than to get out of one. This one is deceptively succinct yet important so I will add it again: it is far easier to avoid a problem than to get out of one. Really.

With these three principles in mind, everything else is a detail. Here are a few of them:

  • Temperature decreases with altitude. This makes going up and down hills doubly dangerous.
  • Bridges do not have the heat capacity of the ground. Even if the road is not icy, be careful when crossing a bridge.
  • If you have to get out of your car, keep in mind that although you may have the right of way as a pedestrian it doesn't really matter if you end up in a hospital defending it.

Here are two other links: one and two.

Posted by james at 11:49 PM in Commentary and Observations

Tuesday, 14 October 2008

News Sources

I was chatting with my father recently about the election and he asked about news sources that I read. Aside from The Economist, which I read in print, here are a few of my favorite online news sources:

I was amused to find that delicious suggests the tag "obama" for Real Clear Politics which is a nonpartisan poll data aggregation site. I thought to see what they suggested for www (dot) foxnews (dot) com [I just cannot bring myself to link to them] but nothing interesting came up; I tagged them "liars" in the hopes of creating a "delicious bomb" in the style of "Miserable Failure". Anybody care to join me?

Posted by james at 2:23 PM in Commentary and Observations

Friday, 10 October 2008

Overly Educated

I was reading David Brooks' opinion piece The Class War Before Palin and I was struck by the sentence The nation is divided between the wholesome Joe Sixpacks in the heartland and the oversophisticated, overeducated, oversecularized denizens of the coasts. I am trying to figure out what overeducated means.

Education has always seemed like a good thing. I can understand "oversophisticated" as a code word for pretentious, and am forced to laugh at myself for twinge I feel in not writing "overly sophisticated", but I remain stuck on "overeducated". I have heard phrases such as "He is overly educated to be working as a janitor" but that seems more a judgemental statement about wasted ability. Could there be some hidden qualifier as in "overly educated to make responsible choices as a citizen" or "overly educated to relate to (or agree with) me, a wholesome Joe Sixpack"?

This leads me to wonder about the "wholesome" claim, particularly in the context of Mrs. Palin. As the marketing campaign, passing as political discourse, strains itself to construct ever more disconnected realities, I find that I often have to double check that words mean what I think them mean.

Perhaps wholesome is one of these words like ravel that mean their own opposite. I understand the "having the simple health or vigor of normal domesticity" take on Mrs. Palin (it seems not to apply to the red states as a whole.. perhaps that's the six pack bit) but could not claim that she bears the "promoting health or well-being of mind or spirit... or body" sense of the word. For the record, cyanide laced Twinkies are not wholesome... they might be sweet in an unctuous and jejune sort of way but are, ultimately, nothing but dangerous.

Posted by james at 6:19 PM in Commentary and Observations

Sunday, 13 July 2008

Nostalgia

I had the pleasure of entertaining my daughter last week while being the spouse at a very nice conference. One of my allies was youtube where I found some delightful School House Rock videos whose lyrics I seem to still know from my youth. My favorites concern grammar (warning: earworms):


Posted by james at 7:55 PM in Commentary and Observations

Monday, 2 June 2008

Seleger Moor

This weekend, my family and I went to Selegermoor; it's quite pretty.
Posted by james at 1:20 PM in Commentary and Observations

Tuesday, 15 April 2008

Cables

I have a new cable supplier based simply upon this.

Posted by james at 10:26 PM in Commentary and Observations

Friday, 11 April 2008

Bad Vista!

bad vistaimage
Posted by james at 10:35 PM in Commentary and Observations

Tuesday, 6 November 2007

Graphics cards

I find that new Thinkpads have an option for nVidia graphics cards instead ofATI; this makes me happy. I wonder what the rest of the world thinks. Google says:
about 834 for "ati sucks" 
about 4,070 for "ati rules"

about 585 for "nvidia sucks"
about 5,150 for "nvidia rules"

while I am at it...

about 110 for "matrox sucks" 
about 180 for "matrox rules" 

which is a pretty bad ratio but not many people care. Hmmmm....

about 211,000 for "vista sucks" 
about 85,400 for "vista rules"

about 592 for "leopard sucks"
about 1,650 for "leopard rules"

about 1,120 for "gentoo sucks"
about 23,900 for "gentoo rules".
time for some analysis:
(loop for x in '(("ati" 834 4070)
		 ("nvidia" 585 5150)
		 ("matrox" 110 180)
		 ("vista" 211000 85400)
		 ("leopard" 592 1650)
		 ("gentoo" 1120 23900))
      do (insert (format "%s\t%f\n" (car x) (/ (* 1.0 (cadr x))  (caddr x)))))

ati	0.204914
nvidia	0.113592
matrox	0.611111
vista	2.470726
leopard	0.358788
gentoo	0.046862


(/ 2.47 0.046862)
52.70795100507875 ;; ha!
Also, emacs rules.
Posted by james at 2:48 PM in Commentary and Observations

Sunday, 14 October 2007

Conservative mathematics

Reading a friends blog, I find reference to Conservapedia (there should really be a "context" attribute of the html anchor tag; that way one could link to examples of stupidity without floating the page rank), a reaction to wikipedia's liberal bent. What liberal bent?. Anybody can add points and topics to wikipedia via a community driven process. It's open and inclusive. As such, the point of conservapedia must be more about exclusion: a place where conservatives can find opinions and information without any pesky conflicting points being raised. Enabling ignorance seems like an odd mission statement to me but, if that's how they want to use their time, let them. Reading more of my friends posting and of the web site itself, I find that one of their issues with wikipedia seems to involve mathematics:

Wikipedia has many entries on mathematical concepts, but lacked any entry on the basic concept of an elementary proof until this omission was pointed out here. Elementary proofs require a rigor lacking in many mathematical claims promoted on Wikipedia.

A mathematical response is available at Good Math, Bad Math.

Initially I thought "Good grief! Does all rational thought annoy the social conservatives?". Ok, I knew that they are angry at biology because they don't like evolution. Initially, the anger was over natural selection and the idea that the inherent randomness was an affront to a God's plan (perhaps if they had known of the Law of large numbers it would have been ok); Lamarckian was ok. Later, the diversification of species and initial formation of life became the sticky points. Most recently I hear people refuting evolution itself which I find amusing as it is both directly observable and fairly obvious once it's pointed out... oh well. I knew that some conservatives were angry at physics for such areas as cosmology and quantum mechanics. I even knew that they were angry at the field of statistics for poking enormous holes in many of their theories. But pure math... how could anybody object?

Thinking about it a bit more, however, it occurs to me that there is a bit of a history of such uncomfortable interactions between mathematics and social thought. Georg Cantor's work on the transinfinite caused a great social and theological stir; indeed Cantor was greatly concerned with these issues himself. Gauss, it seems, had thought about non-Euclidean geometries but was concerned about the theological implications so did not publish the work. Goedel's work on incompleteness and Turing's on the halting problem both caused significant philosophical turmoil both inside the mathematical community and outside of it. The idea that some numbers are irrational greatly bothered the greeks. Mathematical problems in the Bible (pi equals three) or the Koran (inconsistent inheritance rules) lead some to argue that they cannot be divine documents.

In each of these cases, mathematical thinking challenged beliefs people held about the universe. Is this somehow the case with the conservatives and complex numbers? I suppose that the very ideas of abstraction and subtlety are anathemas to fundamentalism but I am not sure that this is the issue here. In any case, I am reasonably confident that complex numbers are not part of a liberal conspiracy. Then again google tells me that there are 45,600 pages mentioning both the quaternions and communism (soon 45,601?). Who would have guessed?

I recently read an interesting series of discussions, pointed to from metafilter, about whether .9 repeating equals 1 (it does). At times, the threads took on almost religious aspects. I would have liked to ask many of the participants "What do you think the real numbers are? How do you define them? Do they somehow correspond to the space that we live in?" For the last question, at least, I personally would be happy to have a better answer than I currently do (where does Plank's constant fit in).

We commonly have a sense of familiarity with the real numbers that isn't quite justified. The notion of incomputable number is kind of upsetting, that most real numbers are incomputable is yet more upsetting, and that it has physical implications is enough to drive one batty. There is also the belief that the passage from integers to rationals to reals is the only way one can do things.... whoops!. Finally, and despite the terminology, the real numbers are not comparatively more simple nor the complex numbers comparatively less real.

In some distant way, it reminds me a bit of a group of French (ha!) mathematicians, Association des collaborateurs de Nicolas Bourbaki, who wanted to reduce all of mathematics to set theory. Thus the two groups have in common that they wish mathematics to be reduced down to primitives. The main difference between the two groups is that the members of Bourbaki were great mathematicians who had a profound understanding what they were talking about; far from wishing to limit the roles of abstraction, they wished to make it stronger, unassailable. Regarding conservapedia, I am bewildered.

What's the point in all of this? I just wanted to offer some historical instances of interactions between social and mathematical thought. History has shown that when one finds instances where the two are incompatible, it is time for social thought to evolve. All things said and done, I suspect that wikipedia will continue to be the more useful source of information.

Posted by james at 4:45 PM in Commentary and Observations

Friday, 12 October 2007

Too many posters

With an upcoming elections in Switzerland, I am a bit overwhelmed with the sheer number of posters I have to look at. Perhaps the SVP could assault us with fewer posters if they combined them. I propose the following:

baaaahhhhh

Posted by james at 5:40 PM in Commentary and Observations

Wednesday, 10 October 2007

Missing news coverage

I was pointed to an article in the Washington Post, that describes a recent crime in which two men attacked an Angolan immigrant with a chainsaw yelling "We don't need Africans in our country. We're here to kill you!". The paper reports:

The two masked assailants cornered da Costa and began raking him with the whirring chain-saw blades. They slashed one arm to the bone, nearly sliced off his left thumb and hacked his face, neck and chest, the 37-year-old Angolan said, his voice quavering as he recounted the May 1 attack.
Beyond the horror of the event itself, particularly set with the backdrop of the latest ad campaign from the Swiss Peoples Party (the chief mongers of racism and xenophobia in the country), is the bizarre absence of this story from the local news. Honestly, I initially thought that it must be a hoax but here is the police report. A bit more digging shows there was perfunctory reporting of the event, generally stripped of the anti-foreigner/racial aspects, but I seemed to have missed the sort of national self-introspection one might expect from such a crime.

Posted by james at 8:51 PM in Commentary and Observations

Perfume

I recently saw the movie version of Patrick Suskind's Perfume: The Story of a Murderer. I had never read the book went to but a copy. As often, I fell prey to the curse of Amazon's "Customers Who Bought This Item Also Bought" and ended up with a seven or eight of books in some way related to perfume, a topic which I have found abstractly interesting since enjoying Diane Ackerman's A Natural History of the Senses many years ago.

Essence and Alchemy by Mandy Aftel concerns natural perfume components, by origin and aspect, and how these components can be composed. I rather enjoyed it and was amused that just as I began, the train in which I was traveling happened to passed through Grasse.

I am now reading The Secret of Scent: Adventures in Perfume and the Science of Smell by Luca Turin. This book is a delightful mixture covering a wide range of topics including historical aspects perfums, the perfume industry, components and composition, and the chemistry of scents. Dr. Turin is the CTO of Flexitral, a producer of synthetic scents with a surprisingly interesting web site. His blog, now sadly defunct, is archived here.

Posted by james at 3:10 PM in Commentary and Observations

Thursday, 21 June 2007

Arrrr me pretties

Recently, Rick Cotton, the general counsel of NBC/Universal, argued that the society crime enforcement priorities are backwards: we should be focusing on preventing (intellectual property) piracy rather than such annoyances as bank robbery, fraud, and burglary. When faced with a truly outlandish claim, it's tricky to figure out if the person making the claim is dishonest, insane, or merely stupid. The matter is nicely addressed (eviscerated) in an Ars Technica Article. Reading it, however, I am left wondering about the use of the word "piracy".

There is a perfectly good term for the crime: copyright infringement. How did "piracy" and "stealing" show up in general discourse? Is this another example of Newspeak? The rebranding of an untenable idea? Good old mendacious propaganda? I annoyed each time I rent a dvd and am forced to sit through an infomercial about not copying dvds. I am pretty sure that if I downloaded the movie, my time would not be stolen via subjugation with idiotic message.

Myself, I think Mr. Cotton, and most of the industrial shills of music and movies, are guilty of stealing intelligence and honesty from the public discourse (scarce and precious quantities indeed). Now, that is a serious crime.

Posted by james at 10:22 PM in Commentary and Observations

Tuesday, 13 March 2007

Distributed file systems and version control

The topic of distributed file systems came up at lunch... in particular what can be used to replace AFS in a particular setting. Possibilities included Coda, InterMezzo and Samba. Slowly we collectively realized that with the vastly increased size of laptop hard drives, version control systems have started to fill a role previously occupied by distributed file systems. I find this an interesting observation and wonder if the requirements coming from this usage differ from those of more traditional uses.

Posted by james at 6:05 PM in Commentary and Observations