Submitted by brad on Wed, 2007-05-16 16:34.
Since the dawn of the web, there has been a call for a “single sign-on”
facility. The web consists of millions of independently operated web sites,
many of which ask users to create “accounts” and sign-on to use the site.
This is frustrating to users.
Today the general single sign-on concept has morphed into what is now called
“digital identity management” and is considerably more complex. The most recent
project of excitement is OpenID which is a standard which allows users
to log on using an identifier which can be the URL of an identity service,
possibly even one they run themselves.
Many people view OpenID as positive for privacy because of what came before it.
The first major single sign-on project was Microsoft Passport which came
under criticism both because all your data was managed by a single company and
that single company was a fairly notorious monopoly. To counter that, the
Liberty Alliance project was brewed by Sun, AOL and many other companies,
offering a system not run by any single company. OpenID is simpler and even
However, I feel many of the actors in this space are not considering an inherent
paradox that surrounds the entire field of identity management. On the
surface, privacy-conscious identity management puts control over who gets
identity information in the hands of the user. You decide who to give identity
info to, and when. Ideally, you can even revoke access, and push for minimal
disclosure. Kim Cameron summarized a set of laws of identity
outlining many of these principles.
In spite of these laws one of the goals of most identity management
systems has been ease of use. And who, on the surface, can argue with ease
of use? Managing individual accounts at a thousand web sites is hard.
Creating new accounts for every new web site is hard. We want something
However, here is the contradiction. If you make something easy to do,
it will be done more often. It’s hard to see how this can’t be true.
The easier it is to give somebody ID information, the more often it will
be done. And the easier it is to give ID information, the more palatable
it is to ask for, or demand it. read more »
Submitted by brad on Wed, 2007-05-09 16:05.
In the 1980s, my brother Ty Templeton published his first independent comic book series, Stig’s Inferno. He went on to considerable fame writing and drawing comics for Marvel, D.C. and many others, including favourite characters like Superman, Batman and Spider-Man, as well as a lot of comics associated with TV shows like The Simpsons and Ren and Stimpy. But he’s still at his best doing original stuff.
You may not know it, but years ago I got most of Stig’s Inferno up on the web. Just this week however, a fan scanned in the final issue and I have converted it into web pages. The fan also scanned the covers and supplemental stories from the issues, they will be put up later.
So if you already enjoyed the other episodes journey now to Stig’s Inferno #7.
If you never looked go to The main Stig’s Inferno page. You can also check out small versions of all the issue covers.
I’ll announce when the supplemental stories are added.
The comic tells a variation of Dante’s Inferno, where our hero Stig is killed by the creatures that live in his piano and makes a strange journey through the netherworld. It’s funny stuff, and I’m not just saying it because he’s my brother. Give it a read.
Submitted by brad on Mon, 2007-05-07 18:49.
First, let me introduce a new blog topic, Sysadmin where I will cover computer system administration and OS design issues, notably in Linux and related systems.
My goal is to reduce the nightmare that is system administration and upgrading.
One step that goes partway in my plan would be a special software system that would build for a user a specialized operating system “package” or set of packages. This magic package would, when applied to a virgin distribution of the operating system, convert it into the customized form that the user likes.
The program would work from a modified system, and a copy of a map (with timestamps and hashes) of the original virgin OS from which the user began. First, it would note what packages the user had installed, and declare dependencies for these packages. Thus, installing this magic package would cause the installation of all the packages the user likes, and all that they depend on.
In order to do this well, it would try to determine which packages the user actually used (with access or file change times) and perhaps consider making two different dependency setups — one for the core packages that are frequently used, and another for packages that were probably just tried and never used. A GUI to help users sort packages into those classes would be handy. It must also determine that those packages are still available, dealing with potential conflicts and name change concerns. Right now, most package managers insist that all dependencies be available or they will abort the entire install. To get around this, many of the packages might well be listed as “recommended” rather than required, or options to allow install of the package with missing 1st level (but not 2nd level) dependencies would be used. read more »
Submitted by brad on Fri, 2007-05-04 18:38.
Self-driving cars are still some ways in the future, but there are some things they will want that human drivers can also make use of.
I think it would be nice if the urban data networks were to broadcast the upcoming schedule for traffic light changes in systems with synchronized traffic lights. Information like “The light at location X will go green westbound at 3:42:15.3, amber at 3:42.45.6 and red at 3:42.47.8” and so on. Data for all directions and for turn arrow lights etc. This could be broadcast on data networks, or actually even in modulations of the light from the LEDs in the traffic lights themselves (though you could not see that around turns and over hills.)
Now a simple device that could go in the car could be a heads-up-display (perhaps even just an audio tone) that tells you whether you are in the “zone” for a green light. As you move through the flow, if you started getting so fast that you would get to the intersection too early for it to be green, it could show you in the too-fast zone with a blinking light or a tone that rises in pitch the faster you are. A green light (no tone) would appear when you were in the zone.
It would arrange for you to arrive at the light after it had been green for a second or two, to avoid the risk of hitting cars running the red light in the other direction. Sometimes when I drive down a street with timed lights I will find myself trusting the timing a bit too much, so I am blowing through the moment the light is green, which actually is a bit risky because of red light runners.
(Perhaps the city puts in a longer all-red gap on such lights to deal with this?)
More controversial is the other direction, a tone telling you that you will need to speed up to catch this green before it goes amber. This might encourage people to drive recklessly fast and might be a harder product to legally sell. Though perhaps it could tell you that if you sped up to the limit you would make the light but stop telling you after no legal speed can make it. Of course, people would learn to figure it out.
We figure that out already of course. Many walk/don’t walk signs now have red light countdown timers, and how many of us have not sped up upon seeing the counter getting low? Perhaps this isn’t that dangerous. Just squeaking through a light rarely helps, of course, because the way the timing works you usually are even more likely to miss the next one, and you have to go even faster to make it — to the point that even a daredevil won’t try.
This simple device could be just the start of it. Knowledge of this data for the city (combined with a good GPS map system of course) could advise you of good alternate routes where you will get better traffic light timing. It could advise you to turn if you’re first at a red light (which it will know thanks to GPS) if your destination is off to the right anwyay. Of course it could do better combined with real traffic data and information on construction, gridlock etc.
This is not a cruise control, you would still control the gas. However, if you pressed too hard on the gas your alert would start making the tone, and you would soon learn it is quite unproductive to keep pressing. (You could make this a cruise control but you need to be able to speed up some times to avoid things and change lanes.) People tend more often to speed up and then have to break for a short while waiting for the green, which doesn’t get you there any faster, and is a jerky ride.
The system I describe could be a nice add-on for car GPS systems.
Submitted by brad on Wed, 2007-05-02 19:38.
I really wish I could find a really good calendaring tool. I’ve seen many of the features I want scattered in various tools, though some are nowhere to be found. I thought it would be good to itemize some of them. I’m mostly interested in *nix — I know that on Windows, MS Outlook is the most common choice, with Exchange for sharing. read more »
Submitted by brad on Tue, 2007-05-01 14:05.
I’ve been writing a lot about self-driving cars which have automatic accident avoidance and how they will change our cities. I was recently talking again with Robin Chase, whose new company, goloco attempts to set people up for ad-hoc carpools and got into the issues again. She believes we should use more transit in cities and there’s a lot of merit to that case.
However, in the wealthy USA, we don’t, outside of New York City. We love our cars, and we can afford their much higher cost, so they still dominate, and even in New York many people of means rely strictly on taxis and car services.
Transit is, at first glance, more energy efficient. When it shares right of way with cars it reduces congestion. Private right of way transit also reduces congestion but only when you don’t consider the cost of the private right-of-way, where the balance is harder to decide. (The land only has a many-person vehicle on it a small fraction of the time compared to 1-3 passenger vehicles almost all the time on ordinary roads.)
However, my new realization is that transit may not be as energy efficient as we hope. During rush hour, packed transit vehicles are very efficient, especially if they have regenerative braking. But outside those hours it can be quite wasteful to have a large bus or train with minimal ridership. However, in order to give transit users flexibility, good service outside of rush-hour is important. read more »
Submitted by brad on Mon, 2007-04-30 14:39.
I’ve been remiss in updating my panoramas, so I just did some work on the site and put up a new page full of Alberta panoramas, as well as some others I will point to shortly.
The Alberta rockies are among the most scenic mountains in the world. Many have called the Icefields Parkway, which goes between Banff and Jasper national parks, the most scenic drive in the world. I’ve taken it several times in both summer and winter and it is not to be missed. I have a wide variety of regular photos I need to sort and put up as well from various trips.
This image is of Moraine Lake, which is close to the famous Lake Louise. All the lakes of these parks glow in incredible colours of teal, blue and green due to glacial silt. In winter they are frozen and the colour is less pronounced, but the mountains are more snow-capped, so it’s hard to say which is the best season. (This photo is available as a jigsaw puzzle from Ratzenberger.)
Enjoy the Panoramics of Alberta. And I recommend you book your own trip up to Calgary or Edmonton to do the drive yourself. I think you’ll find this to be among my best galleries of panoramas.
I also recently rebuilt and improved my shot of Ginza-5-Chome, Tokyo’s most famous street corner. While it was handheld I have been able to remove almost all the ghosts with new software.
Submitted by brad on Wed, 2007-04-25 23:54.
As part of my series on the horrors of modern system administration and upgrading, let me propose the need for a universal API, over all operating systems, for accessing data from, and some control of the package management system.
There have been many efforts in the past to standardize programming APIs within all the unix-like operating systems, some of them extending into MS Windows, such as Posix. Posix is a bit small to write very complex programs fully portably but it’s a start. Any such API can make your portability easier if it can’t make it trivial the way it’s supposed to.
But there has been little effort to standardize the next level, machine administration and configuration. Today a large part of that is done with the package manager. Indeed, the package manager is the soul (and curse) of most major OS distributions. One of the biggest answers to “what’s the difference between debian and Fedora” is “dpkg and apt, vs. rpm and yum.” (Yes you can, and I do, use apt with rpm.)
Now the truth is that from a user perspective, these package managers don’t actually look very different. They all install and remove packages by name, perform upgrades, handle dependencies etc. Add-ons like apt and GUI package managers help users search and auto-install all dependencies. To the user, the most common requests are to find and install a package, and to upgrade it or the system. read more »
Submitted by brad on Sat, 2007-04-21 00:38.
An eBay reputation is important if you’re going to sell there. Research shows it adds a decent amount to the price, and it’s very difficult to sell at all with just a few feedbacks. Usually sellers will buy a few items first to get a decent feedback — sometimes even scam items sold just for feedback. Because savvy buyers insist on selling feedback, it’s harder, and sometimes sellers will also sell bogus items just for feedback as a seller. eBay has considered offering a feedback score based on the dollar volume of positive and negative transactions but has not yet done this. Some plugins will do that.
One thing I recommend to low feedback sellers it to offer to reverse the “normal” payment system. If the seller has little feedback and the buyer has much better feedback, the seller should send the item without payment, and the buyer pay on receipt. Many people find this foreign but in fact it makes perfect sense. In real stores you don’t pay until you get the item, and many big reputation merchants allow payment on credit for known buyers. Another idea is to offer to pay for escrow. This costs money, but will make it back in higher sale prices.
However, here’s a new idea. Allow high-reputation sellers to “lease out” feedback, effectively acting as a co-signer. This means they vouch for the brand new seller. If the new seller gets a negative feedback on the transaction, it goes on both the new seller’s feedback and the guarantor’s. Positive feedback goes on the seller and possibly into a special bucket on the guarantor’s. The guarantor would also get to be involved in any disputes.
Seems risky, and because of that, guarantors would only do this for people they trusted well, or who paid them a juicy bond, which is the whole point of the idea. Guarantors would probably use bonds to issue refunds to badly treated customers to avoid a negative, though you want to be careful about blackmail risks. It’s possible the breakdown of true and as-guarantor negatives might be visible on a guarantor if you look deep, but the idea is the guarantor should be strongly motivated to keep the new seller in line.
With lendable reputation, new sellers could start pleasing customers and competing from day one.
Submitted by brad on Tue, 2007-04-17 17:36.
Yesterday I attended the online community session of Web2Open, a barcamp-like meeting going on within Tim O’Reilly’s Web 2.0 Expo. (The Expo has a huge number of attendees, it’s doing very well.)
I put forward a number of questions I’ve been considering for later posts, but one I want to make here is this: Where has the innovation been in online discussion software? Why are most message boards and blog comment systems so hard to use?
I know this is true because huge numbers of people are still using USENET, and not just for downloading binaries. USENET hasn’t seen much technical innovation since the 80s. As such, it’s aging, but it shouldn’t be simply aging, it should have been superseded long ago. We’ve gone through a period of tremendous online innovation in the last few decades, unlike any in history. Other old systems, like the Well, continue to exist and even keep paying customers in spite of minimal innovation. This is like gopher beating Firefox, or a CD Walkman being superior in some ways to an iPod. It’s crazy. (The users aren’t crazy, it’s the fact that their choice is right that’s crazy.) read more »
Submitted by brad on Sun, 2007-04-15 16:45.
The use of virtual machines is getting very popular in the web hosting world. Particularly exciting to many people is Amazon.com’s EC2 — which means Elastic Compute Cloud. It’s a large pool of virtual machines that you can rent by the hour. I know people planning on basing whole companies on this system, because they can build an application that scales up by adding more virtual machines on demand. It’s decently priced and a lot cheaper than building it yourself in most cases.
In many ways, something like EC2 would be great for all those web sites which deal with the “slashdot” effect. I hope to see web hosters, servers and web applications just naturally allow scaling through the addition of extra machines. This typically means either some round-robin-DNS, or a master server that does redirects to a pool of servers, or a master cache that processes the data from a pool of servers, or a few other methods. Dealing with persistent state that can’t be kept in cookies requires a shared database among all the servers, which may make the database the limiting factor. Rumours suggest Amazon will release an SQL interface to their internal storage system which presumably is highly scalable, solving that problem.
As noted, this would be great for small to medium web sites. They can mostly run on a single server, but if they ever see a giant burst of traffic, for example by being linked to from a highly popular site, they can in minutes bring up extra servers to share the load. I’ve suggested this approach for the Battlestar Galactica Wiki I’ve been using — normally their load is modest, but while the show is on, each week, predictably, they get such a huge load of traffic when the show actually airs that they have to lock the wiki down. They have tried to solve this the old fashioned way — buying bigger servers — but that’s a waste when they really just need one day a week, 22 weeks a year, of high capacity.
However, I digress. What I really want to talk about is using such systems to get access to all sorts of platforms. As I’ve noted before, linux is a huge mishmash of platforms. There are many revisions of Ubuntu, Fedora, SuSE, Debian, Gentoo and many others out there. Not just the current release, but all the past releases, in both stable, testing and unstable branches. On top of that there are many versions of the BSD variants. read more »
Submitted by brad on Sat, 2007-04-07 23:54.
Towns lament the coming of big-box stores like Wal-Mart and Costco. Their cut-rate competition changes the nature of shopping and shopping neighbourhoods. To stop it, towns sometimes block the arrival of such stores. Now web competition is changing the landscape even more. But our shopping areas are still “designed” with the old thinking in mind. Some of them are being “redesigned” the hard way by market forces. Can we get what we really want?
We must realize that it isn’t Wal-Mart who closes down the mom’n’pop store. It’s the ordinary people, who used to shop at it and switch to Wal-Mart who close it down. They have a choice, and indeed in some areas such stores survive. read more »
Submitted by brad on Thu, 2007-04-05 00:06.
I’ve written before about the problems with TV advertising. Recently I’ve been thinking more about the efficiency of various methods of advertising — to the target, not to the advertiser. Almost all studies of advertising concern how effectively advertising turns into leads or sales, but rarely are the interests of the target of the ad considered directly.
I think that has to change, because we’re getting more tools to avoid advertising and getting more resistant. I refuse to watch TV with ads, because at $1.20 per hour of advertising watched, it’s a horrible bargain. I would rather pay if I could, and do indeed buy the DVDs in many cases, but mostly my MythTV skips the ads for me. The more able I am to do this, the more my desires as a target must be addressed.
Advertising isn’t totally valueless to the target. In fact, Google feels one big reason for their success is that they deliver ads you might actually care to look at. There are other forms of advertising with the same mantra out there, and they tend to do well, such as movie trailers and Superbowl ads.
Consider a video ad lasting 30 seconds, with a $10 CPM. That means the advertiser pays one cent per viewer of the ad. The viewer spends 30 seconds. On the other hand, a box with 3 or 4 Google ads, as you might see on this page, is typically scanned in well under a second. These ads also earn (as a group) about a $10 CPM though they are paid per click. Google doesn’t publish numbers, but let’s assume a $10 CPM and a 1% click-through on the box. It’s actually higher than this.
In the 30 seconds a TV ad takes, I can peruse perhaps 50 boxes, bars or banners of web ads. That will expose me to over 100 product offers that in theory match my interests, compared to 1 for the video ad. The video ad will of course be far more convincing as it is getting so much attention, but in terms of worthwhile products offered to me per second, it’s terrible.
It isn’t quite this simple though, since I will click on one ad every every minute spent looking at ads (not every minute on the web) and perhaps spend another minute looking in detail at what the ad had to offer. That particular, very well targeted site, gains the wealth of attention the video ad demands, but far more efficiently.
I think this area is worth of more study in the industry, and I think it’s a less understood reason why Google is getting rich, and old media are running scared. In the future, people will tolerate advertising less and less unless it is clearer to them what value they are getting for it. Simply being able to get free programming is not the value we’re looking for, or if it is, we want a better deal — more programming in exchange for our valuable attention. But we want more than that better deal. We want to be advertised to efficiently, in a way that considers our needs and value. The companies that get that will win, the dinosaurs will find themselves in the movie “The Sixth Sense” — dead people, who don’t know they’re dead.
Submitted by brad on Tue, 2007-04-03 15:16.
In the Temple of Five, #3 (D’Anna) seeks to see the faces of the Final Five. Cavil says “That can’t happen” and tries to shoot her. Later she is boxed for her quest (and also because the actress is only contracted for so many episodes, but we’ll ignore that.:-)
As she enters the projection, she looks with some surprise at the 5 robed figures laid out before her. Curiously, there are six drapes, but they stand on only 5 of them, leaving the one on her left empty. Then she approaches one with a look of shocked recognition and issues the apology:
You… Forgive me I…I had no idea
(By the way, in a nice irony, as she gives up everything to see the faces of the Final Five, two of them are outside, getting shot at by her own Centurions.) read more »
Submitted by brad on Mon, 2007-04-02 17:41.
The human voice is a pretty versatile instrument, and many skilled vocalists have been able to do convincing imitations of other sounds, and we’ve all heard “human beat box” artists work with a microphone to do great sounds.
That got me thinking, could we train a choir to work together to sound like anything, starting with violins, and perhaps even a piano or more?
The idea would be to get some vocalists to make lots of sounds, both pure tones and more complex ones, and break them apart with spectrum analysis. Do the same for the target sound — try to break it up into components that might be made by human vocal cords with appropriate spectrum analysis.
Then find a way to easily add the human sounds together to sound like the instrument. Each singer might focus on one of the harmonics or other tonal qualities of the instrument. Do it first in the computer, and then see if the people can do it together, without being distracted. Then work on doing the attack and decay and other artifacts of the start and end of notes.
If it all worked, it would be a fun gag for a choir to suddenly sound like a piano or violin playing a popular piece. Purer tones like a flute might be harder than complex tones. Percussion is obviously possible though it might need some amplification. Indeed, amplification to adjust the levels properly might help a lot but would be slightly more artificial than hearing this without any electronics. Who knows, perhaps a choir could even sound like an orchestra playing the opening to Beethoven’s 5th, something everybody knows well.
Submitted by brad on Sat, 2007-03-31 14:42.
My father was famously a preacher turned agnostic. We used to argue all the time about the difference between an agnostic and an athiest. I felt the difference was inconsequential, he felt it was important. And I’ve had the same argument with other proclaimed agnostics. I found an amusing way to sum up my view of it in one answer.
What is the difference between an atheist and an agnostic?
The difference is the atheist says she’s an atheist, while the agnostic says she’s an agnostic. read more »
Submitted by brad on Thu, 2007-03-29 22:32.
If you’ve looked around, you probably noticed a high-def DVD player, be it HD-DVD or Blu-Ray, is expensive. Expect to pay $500 or so unless you get one bundled with a game console where they are subsidized.
Now they won’t follow this suggestion, but the reality is they didn’t need to make the move to these new DVD formats. Regular old DVD can actually handle pretty decent HDTV movies. Not as good as the new formats, but a lot better than plain DVD. I’ve seen videos with the latest codecs that pack a quite nice HD picture into 2.5 to 3 gigabytes for an hour. I’ve even seen it in less, down to 1.5 gigabytes (actually less that SD DVDs) at 720p 24 fps, though you do notice some problems. But it’s still way better than a standard DVD. Even so, a dual layer DVD can bring about 9 gb, and a double sided dual layer DVD gives you 18gb if you are willing to flip the disk over to get at special features or the 2nd half of a very long movie. Or of course just do 2-disk sets.
Now you might feel that the DVD industry would not want to make a new slew of regular DVD players with the fancier chips in them able to do these mp4 codecs when something clearly better is around the corner. And if they did do this, it would delay adoption of whatever high def DVD format they are backing in the format wars. But in fact, these disks could have been readily playable already, with no change, for the millions who watch DVDs on laptops and media center PCs. More than will have HD DVD or Blu-Ray for some time to come, even with the boost the Playstation 3 gives to Blu-Ray. read more »
Submitted by brad on Sun, 2007-03-25 13:56.
One of my current peeves is just how much time we spend maintaining and upgrading computer operating systems, even as ordinary users. The workload for this is unacceptably high, though it’s not as though people are unaware of the problem.
Right now I’m updating one system to the beta of the new Ubuntu Feisty Fawn. (Ubuntu is the Linux distro I currently recommend.) They have done some work on building a single upgrader, which is good, but I was shocked to see an old problem resurface. In a 2 hour upgrade process, it asked me questions it didn’t need to ask me, and worse, it asked them at different times in the process. read more »
Submitted by brad on Thu, 2007-03-22 01:34.
This year’s theme for Burning Man is “the Green Man.” It represents a lot of things. For many it just is an inspiration for art centered on nature or the environment. Others are taking it as a signal to try to be better environmentally. That’s going to be a very tough road for a festival centered on building a temporary city far from everything and pyrotechnic art.
So I wrote up some thoughts on the challenges involved. The toughest problem is that transporting an entire city to the desert and then taking it back is a great personal and artistic endeavour, but not one that can be considered green. All efforts to reduce the pollution at the event are dwarfed by the fuel burned to get there. So what can be done?
Read about the problems of having a green man.
Submitted by brad on Sat, 2007-03-17 19:33.
When I watch SF TV shows, I often try to imagine a backstory that might make the story even better and SF like. My current favourite show is Battlestar Galactica, which is one of those shows where a deep mystery is slowly revealed to the audience.
So based on my own thoughts, and other ideas inspired from newsgroups, I’ve jotted down a backstory to explain the results you see in the show. Of course, much of it probably won’t end up being true, but there are hints that some of it might.
In my Battlestar Galactica back-story I explain why
- Why everybody — even the so-called humans — is a Cylon
- Who the Final 5 are and what they are doing
- Why all this has happened before and is happening again
- How the Cylons were made, and where they got their biotech
Of course, ignore this if you don’t watch the show. It’s pure fanfic/speculation.
The show remains one of the great SF TV shows, though it has been bogging down of late. This timeline may be a plea to return the show to some good hard SF roots. Posthumanism and strife between humans and AIs are hot themes in modern SF, and BSG is most interesting if it’s set in our future with things to say about the relationship between man, machine and artificial biological intelligence.
Update: I have updated the article based on the season finale, which confirmed a number of my speculations though of course not all of them.