Cambridge public schools will close for a Muslim holiday this year.
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Glad I no longer live in Cambridge.
This blog posts about aviation, automobiles, electronics, programming, politics and such other subjects as catch my interest. The blog is based in northern New Hampshire, USA
Monday, November 7, 2011
Sunday, November 6, 2011
Strange Obit in The Economist
The Economist wrote an obit for Dennis Ritchie, who died October 12. The obit writer was so ignorant as to fail to mention that Dennis Ritchie is the Ritchie of Kernighan and Ritchie, "The C Programming Language", a slim paperback book owned and revered by every programmer on earth. The book is so basic and so well known that it goes by the name of "K&R" in the programming world.
Then the obit writer makes a few wild claims. "C fundamentally changed the way computer programs were written". Not quite so. That honor belongs to FORTRAN which goes back to the early 1950's. FORTRAN was the first widely accepted higher level language and made portable (will run on more than one brand of computer) programs possible. It was so popular that all competing computer companies were obliged to offer a FORTRAN compiler on their machines.
C came later, 1960's, from Dennis Ritchie and Ken Thompson at Bell Labs. C caught on and became wildly popular because it was a vastly better FORTRAN than FORTRAN was. Not that C could do anything that FORTRAN couldn't do, but programming in C was infinitely easier. C swept away the myriad of pit falls, gotcha's and spaghetti coding practices of FORTRAN. I can still remember the pleasures of doing it in C after years of struggling along in FORTRAN.
C had a lot of great features, foremost among them was manual, K&R. This thin book was clear and lucid and above all short. Everything you need to know is in it, well organized and so well written you could read it for pleasure. Compared to the massive, wordy and opaque manuals that came with other computer languages, The C Programming Language was pure poetry and contributed mightily to the success of C.
Today practically all commercial programming is done in C. So in honoring Dennis Ritchie we are honoring a man who created modern computer programming, not single handedly, but with co workers. Dennis didn't do all the work, but he did do a lot of the work.
Then the obit writer makes a few wild claims. "C fundamentally changed the way computer programs were written". Not quite so. That honor belongs to FORTRAN which goes back to the early 1950's. FORTRAN was the first widely accepted higher level language and made portable (will run on more than one brand of computer) programs possible. It was so popular that all competing computer companies were obliged to offer a FORTRAN compiler on their machines.
C came later, 1960's, from Dennis Ritchie and Ken Thompson at Bell Labs. C caught on and became wildly popular because it was a vastly better FORTRAN than FORTRAN was. Not that C could do anything that FORTRAN couldn't do, but programming in C was infinitely easier. C swept away the myriad of pit falls, gotcha's and spaghetti coding practices of FORTRAN. I can still remember the pleasures of doing it in C after years of struggling along in FORTRAN.
C had a lot of great features, foremost among them was manual, K&R. This thin book was clear and lucid and above all short. Everything you need to know is in it, well organized and so well written you could read it for pleasure. Compared to the massive, wordy and opaque manuals that came with other computer languages, The C Programming Language was pure poetry and contributed mightily to the success of C.
Today practically all commercial programming is done in C. So in honoring Dennis Ritchie we are honoring a man who created modern computer programming, not single handedly, but with co workers. Dennis didn't do all the work, but he did do a lot of the work.
Saturday, November 5, 2011
Firewall, or is it a ring fence
With Greece sliding down the tubes, and the rest of the EU running around crying out "The sky is falling, the sky is falling", newsies on NPR and at The Economist keep agitating for a "firewall" (American speak) or a "ringfence" (European speak) around Greece to "prevent the contagion from spreading".
I wonder what they are talking about? Do they mean a great big sugardaddy who will step in and guarantee that all lenders to Greece and every other shaky country will get paid off in full and nobody will ever loose any money?
That would be nice, but neither the Americans nor the Chinese have that much money, and even if they did, they are not inclined to spend it on Europe. Nobody else in the world is big enough or well heeled enough to be a creditable sugardaddy.
The fundamental problem with Greece is nobody in their right mind is gonna lend them any more money. They are broke, owe more than they can ever pay, and still want to borrow more to cover their government spending. Their economy, never very good, is not growing, and doesn't throw off enough cash to pay their way. What kind of "firewall" can change that?
Then come the other shaky European countries. They aren't as bad off as Greece, yet, but everyone of sense can see where they are headed. Already they have to pay 5 and 6 percent for money while Germany and America can borrow for under 3%. As confidence wanes, they are going to find it harder and harder to borrow money. Soon it will become impossible.
Again, what sort of "firewall" will convince people to lend to deadbeats?
Or are we just hearing naive newsie's wishing for Santa Claus?
I wonder what they are talking about? Do they mean a great big sugardaddy who will step in and guarantee that all lenders to Greece and every other shaky country will get paid off in full and nobody will ever loose any money?
That would be nice, but neither the Americans nor the Chinese have that much money, and even if they did, they are not inclined to spend it on Europe. Nobody else in the world is big enough or well heeled enough to be a creditable sugardaddy.
The fundamental problem with Greece is nobody in their right mind is gonna lend them any more money. They are broke, owe more than they can ever pay, and still want to borrow more to cover their government spending. Their economy, never very good, is not growing, and doesn't throw off enough cash to pay their way. What kind of "firewall" can change that?
Then come the other shaky European countries. They aren't as bad off as Greece, yet, but everyone of sense can see where they are headed. Already they have to pay 5 and 6 percent for money while Germany and America can borrow for under 3%. As confidence wanes, they are going to find it harder and harder to borrow money. Soon it will become impossible.
Again, what sort of "firewall" will convince people to lend to deadbeats?
Or are we just hearing naive newsie's wishing for Santa Claus?
Friday, November 4, 2011
Dances with Dragons George RR Martin
It's the latest and fifth in the Game of Thrones/Fire and Ice saga. It's thick, and takes some time to read. It ends like the first four books of the series, all the good guy protagonists get killed, and the bad guys are still alive and ready for use in the next book. Actually I think one or two of the Starks are still sort of alive at the end, but the rest have bought the farm.
If you have read the previous Fire and Ice books, you will want to read this one, just to learn what happens, but toward the end I found myself just skimming hoping to get to where something happens. I'm afraid Mr. Martin has been reading too many of the Robert Jordan fantasies which just go on and on and nothing ever gets accomplished. Good old Tolkien, who invented the genre, at least made things happen. At the end of the trilogy the ring was thrown in the fire and the dark lord destroyed. Tolkien's modern imitators don't do that sort of thing anymore, the story just rambles on and on and never seems to get anywhere.
If you have read the previous Fire and Ice books, you will want to read this one, just to learn what happens, but toward the end I found myself just skimming hoping to get to where something happens. I'm afraid Mr. Martin has been reading too many of the Robert Jordan fantasies which just go on and on and nothing ever gets accomplished. Good old Tolkien, who invented the genre, at least made things happen. At the end of the trilogy the ring was thrown in the fire and the dark lord destroyed. Tolkien's modern imitators don't do that sort of thing anymore, the story just rambles on and on and never seems to get anywhere.
Thursday, November 3, 2011
Dr. Watson on NPR
NPR ran a piece this morning about Watson, the IBM computer that is now the world's Jeopardy champion, having beaten the top human players on live TV a while ago. Watson has been hired to do legal scutwork, replacing 500 lawyers. (Question: What's 500 lawyers thrown out of work by a computer? Ans: A good start)
The NPR piece ran on speculating that massive unemployment awaits as computers take over from humans in other places.
Funny thing, the piece was all science fiction, things that might happen in the future. They didn't talk about draftsmen, clerk typists and travel agents. All of which have gone away since I started working.
Back when I started in industry, I sketched the needed drawings on squared paper and then went down to drafting. Where a full time draftsman would make beautiful D size drawings in ink on vellum. Or, even more time consuming, "tape out" a printed circuit board, laying each trace out with thin sticky tape. My first real design, a 4 by 8 inch CPU board, took a draftsman four weeks to tape out. Back then companies had more draftsmen than engineers.
Then we engineers got desktop computers with CAD programs. I could produce better drawings, faster, right on my desktop. The last few places I worked, before retiring, had no draftsmen at all. The engineers did all the drawings, using desktop CAD.
Back when I started work, everything written, memo's, proposals, instruction manuals, test procedures, parts lists had to be typed. And companies had clerk typists who took hand written rough copy and typed out fair copy using the legendary IBM Selectric typewriter. Then we got Word for Windows. Pretty soon everyone typed their own stuff on their own desktop computer. Again, the last couple of companies I worked for, didn't even have one clerk typist.
And, back then, to go on a trip, you called the company travel agency and they arranged air tickets, rental cars, and motels. Not any more, everyone makes their own arrangements using Orbitz or Travelocity. The travel agencies are mostly gone by now.
So, fairly humble automation has already replaced a lot of workers. I mean a $600 Windows desktop is peanuts compared to Watson. The cheapy desktops ought to replace a lot of pure paper shuffling jobs. Which isn't all bad, who really wants to shuffle paper for a living?
The NPR piece ran on speculating that massive unemployment awaits as computers take over from humans in other places.
Funny thing, the piece was all science fiction, things that might happen in the future. They didn't talk about draftsmen, clerk typists and travel agents. All of which have gone away since I started working.
Back when I started in industry, I sketched the needed drawings on squared paper and then went down to drafting. Where a full time draftsman would make beautiful D size drawings in ink on vellum. Or, even more time consuming, "tape out" a printed circuit board, laying each trace out with thin sticky tape. My first real design, a 4 by 8 inch CPU board, took a draftsman four weeks to tape out. Back then companies had more draftsmen than engineers.
Then we engineers got desktop computers with CAD programs. I could produce better drawings, faster, right on my desktop. The last few places I worked, before retiring, had no draftsmen at all. The engineers did all the drawings, using desktop CAD.
Back when I started work, everything written, memo's, proposals, instruction manuals, test procedures, parts lists had to be typed. And companies had clerk typists who took hand written rough copy and typed out fair copy using the legendary IBM Selectric typewriter. Then we got Word for Windows. Pretty soon everyone typed their own stuff on their own desktop computer. Again, the last couple of companies I worked for, didn't even have one clerk typist.
And, back then, to go on a trip, you called the company travel agency and they arranged air tickets, rental cars, and motels. Not any more, everyone makes their own arrangements using Orbitz or Travelocity. The travel agencies are mostly gone by now.
So, fairly humble automation has already replaced a lot of workers. I mean a $600 Windows desktop is peanuts compared to Watson. The cheapy desktops ought to replace a lot of pure paper shuffling jobs. Which isn't all bad, who really wants to shuffle paper for a living?
Wednesday, November 2, 2011
Grade school math scores improve, reading flat
Scores on the National Assessment of Educational Progress, show a solid 9% rise on the math scores, whereas reading scores are flat. The test results cover the years 1990 to 2010, twenty years in all. Assuming they haven't watered down the test over twenty years, this says that the math teachers are improving their performance and the reading teachers ain't. Wonder why?
Could it be that reading teachers assign nothing but awful books? I made a point of reading all of my son's assigned middle school and high school reading and wow, every one of 'em was awful. Wimpy protagonists who get sand kicked in their faces for 350 pages. Hard core distopias that make 1984 seem like summer camp. Totally boring tales. Age inappropriateness, books that would make sense high school junior year, assigned in 7th grade. Minor works assigned in place of the author's best work. Books of pure political indoctrination thinly disguised as literature.
Could it be a steady diet of awful books turns kids off from reading?
Could it be that reading teachers assign nothing but awful books? I made a point of reading all of my son's assigned middle school and high school reading and wow, every one of 'em was awful. Wimpy protagonists who get sand kicked in their faces for 350 pages. Hard core distopias that make 1984 seem like summer camp. Totally boring tales. Age inappropriateness, books that would make sense high school junior year, assigned in 7th grade. Minor works assigned in place of the author's best work. Books of pure political indoctrination thinly disguised as literature.
Could it be a steady diet of awful books turns kids off from reading?
Tuesday, November 1, 2011
Obama doesn't negotiate, at all
A week ago, Obama announced he was withdrawing ALL American forces from Iraq. Despite objections from the Pentagon and leaving Iraq wide open to invasion or subversion by Iran. At the time Obama claimed this unfortunate result was caused by Iraqi intransigence; the Iraqi's refused to sign a status of forces agreement exempting US troops from Iraqi law.
Say it ain't so. Well, Max Boot, writing on the Journal's op ed page says it ain't so. According to Max, President Bush used to have weekly video conferences with Mr. Malaki. Where as the only time Obama video conferenced was just once, to announce that negotiations had failed. In short, Obama didn't bother to negotiate, he just picked up his marbles and went home.
Say it ain't so. Well, Max Boot, writing on the Journal's op ed page says it ain't so. According to Max, President Bush used to have weekly video conferences with Mr. Malaki. Where as the only time Obama video conferenced was just once, to announce that negotiations had failed. In short, Obama didn't bother to negotiate, he just picked up his marbles and went home.
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