Brad Ideas

Robocars & More

While it's stupid that the biggest story to come out of South by Southwest (SXSW) Interactive was the gossip over the interview of Mark Zuckerberg by Sarah Lacy, the one "hook" that has kept the story going is the suggestion that it was the use of twitter, in particular snide comments on twitter, which turned the audience against Lacy, the interviewer from Business Week.

There have even been comments (from those who weren't even there) suggesting witch hunts and misogyny. Other bloggers used hyperbolic terms like "train-wreck" and "career-ending" which are serious exaggerations.

Short summary. In a "keynote" interview, Lacy, who has just finished a book about Facebook, was on stage to interview Zuckerberg. Zuckerberg was, as usual, a difficult interview subject, but for a variety of reasons the character of the interview changed as the audience turned against Lacy, cheering criticism of her. Most agreed they had not seen somebody lose an audience like this in some time.

Earlier I wrote an essay on the paradox of identity management describing some counter-intuitive perils that arise from modern efforts at federated identity. Now it's time to expand these ideas to efforts for portable personal data, especially portable social networks.

Partly as a reaction to Facebook's popular applications platform, other social networking players are seeking a way to work together to stop Facebook from taking the entire pie. The Google-lead open social effort is the leading contender, but there are a variety of related technologies, including OpenID, hcard and other microformats. The primary goal is to make it easy, as users move from one system to another, or run sub-abblications on one platform, to make it easy to provide all sorts of data, including the map of their social network, to the other systems.

Some are also working on a better version of this goal, which is to allow platforms to interoperate. As I wrote a year ago interoperation seems the right long term goal, but a giant privacy challenge emerges. We may not get very many chances to get this right. We may only get one.

The paradox I identified goes against how most developers think. When it comes to greasing the skids of data flow, "features" such as portability, ease of use and user control, may not be entirely positive, and may in fact be on the whole negative. The easier it is for data to flow around, the more it will flow around, and the more that sites will ask, and then demand that it flow. There is a big difference between portability between applications -- such as OpenOffice and MS Word reading and writing the same files -- and portability between sites. Many are very worried about the risks of our handing so much personal data to single 3rd party sites like Facebook. And then Facebook made it super easy -- in fact mandatory with the "install" of any application -- to hand over all that data to hundreds of thousands of independent application developers. Now work is underway to make it super easy to hand over this data to every site that dares to ask or demand it.

Fancier conferences put up two projectors to let the audience see the slides. But the presenters still look at their slides on a notebook on the podium, or in some cases on a monitor on the floor below their stage.

How about adding a projector that projects on the back wall, just above the heads of the audience, for the speaker to see their own slides? Then they can roam the stage and see the slides without losing eye contact with the audience. They may not be able to see clear detail on the slides but they shouldn't need it.

Today I am at eComm, a reborn conference. Tim O'Reilly, who does the eTech conference (which just took place last week) used to run an emerging telecom conference called eTel. They decided not to run it again, so some of the participants who wanted a little more edgy telecom conference pushed to start a different one. I had hoped it would be an ad-hoc conference in the barcamp/unconference style, but instead it's become a more traditional $1K conference like eTel was.

Earlier on, I identified robot delivery vehicles as one of the steps on the roadmap to robot cars. In fact, these are officially what the DARPA grand challenges really seek, since the military wants robots that can move things through danger zones without putting soldiers at risk.

Over the weekend I was at the [BIL conference]http://www.bilconference.com, a barcamp/unconference style justaposition on the very expensive TED conference. I gave a few talks, including one on self driving cars, privacy and AI issues.

The conference, being free, was at a small community center. This location did not have internet. Various methods were possible to provide internet. The easiest are routers which can take cellular network EVDO cards and offer an 802.11 access point. That works most places, but is not able to handle many people, and may or may not violate some terms of service. However, in just about all these locations there are locations very nearby with broadband internet which can be used, including hotels, businesses and even some private homes. But how to get the access in quickly?

What would be useful would be an "instant internet kit" with all you need to take an internet connection (or two) a modest distance over wireless. This kit would be packed up and available via courier to events that want internet access on just a couple of days notice.

What would you put in the kit?

As our devices get more and more complex, configuring them gets harder and harder. And for members of the non-tech-savvy public, close to impossible.

Here's an answer: Develop a simple browser plug-in for all platforms that can connect a USB peripheral to a TCP socket back to the server where the plugin page came from. (This is how flash and Java applets work, in fact this could be added to flash or Java.)

Yesterday I wrote about predictive suspension, to look ahead for bumps on the road and ready the suspension to compensate. There should be more we can learn by looking at the surface of the road ahead, or perhaps touching it, or perhaps getting telemetry from other cars.

I'm not the first to think of this idea, but in my series of essays on self driving cars I thought it would be worth discussing some ideas on suspension.

Driven cars need to have a modestly tight suspension. The driver needs to feel the road. An AI driven car doesn't need that, so the suspension can be tuned for the maximum comfort of the passengers. You can start bu just making it much softer than a driver would like, but you can go further.

A big trend in systems operation these days is the use of virtual machines -- software systems which emulate a standalone machine so you can run a guest operating system as a program on top of another (host) OS. This has become particularly popular for companies selling web hosting. They take one fast machine and run many VMs on it, so that each customer has the illusion of a standalone machine, on which they can do anything.

If you have read my articles on power you know I yearn for the days when we get smart power so we have have universal supplies that power everything. This hit home when we got a new Thinkpad Z61 model, which uses a new power adapter which provides 20 volts at 4.5 amps and uses a new, quite rare power tip which is 8mm in diameter. For almost a decade, thinkpads used 16.5 volts and used a fairly standard 5.5mm plug. It go so that some companies standardized on Thinkpads and put cheap 16 volt TP power supplies in all the conference rooms, allowing employees to just bring their laptops in with no hassle.

Lenovo pissed off their customers with this move. I have perhaps 5 older power supplies, including one each at two desks, one that stays in the laptop bag for travel, one downstairs and one running an older ThinkPad. They are no good to me on the new computer.

Lenovo says they knew this would annoy people, and did it because they needed more power in their laptops, but could not increase the current in the older plug. I'm not quite sure why they need more power -- the newer processors are actually lower wattage -- but they did.

Here's something they could have done to make it better.

I'm a director of BitTorrent Inc. (though not speaking for it) and so the recent debate about P2P applications and ISPs has been interesting to me. Comcast has tried to block off BitTorrent traffic by detecting it and severing certain P2P connections by forging TCP reset packets. Some want net neutrality legislation to stop such nasty activity, others want to embrace it. Brett Glass, who runs a wireless ISP, has become a vocal public opponent of P2P.

Some base their opposition on the fact that since BitTorrent is the best software for publishing large files, it does get used by copyright infringers a fair bit. But some just don't like the concept at all. Let's examine the issues.

A broadband connection consists of an upstream and downstream section. In the beginning, this was always symmetric, you had the same capacity up as down. Even today, big customers like universities and companies buy things like T-1 lines that give 1.5 megabits in each direction. ISPs almost always buy equal sized pipes to and from their peers.

With aDSL, the single phone wire is multiplexed so that you get much less upstream than downstream. A common circuit will give 1.5mbps down and say 256kb up -- a 6 to 1 ratio. Because cable systems weren't designed for 2 way data, they have it worse. They can give a lot down, but they share the upstream over a large block of customers under the existing DOCSIS system. They also will offer upstream on near the 6 to 1 ratio but unlike the DSL companies, there isn't a fixed line there.

As many of you will know, it's been a tumultuous week in President Bush's battle to get congress to retroactively nullify our lawsuit against AT&T over the illegal wiretaps our witnesses have testified to. The President convinced the Senate to pass a bill with retroactive immunity for the phone companies -- an immunity against not just this but all sorts of other illegal activities that have been confirmed but not explained by administration officials. But the House stood firm, and for now has refused. A battle is looming as the two bills must be reconciled.

I've read studies that say that "chocolate" is the world's favourite flavour. That's not too surprising. Coming from central America after the Spanish conquest, the candy at least quickly was adopted all over Europe and to a lesser degree elsewhere. So did many other new world ingredients, such as corn, beans, squash, chiles, potatoes, vanilla, tomatoes, peanuts and many others. And we've seen many of these become common, and even essential ingredients in many overseas cuisines.

Rental car companies are often owned by car manufacturers and are their biggest customers. As cars get more and more computerized, how about making rental cars that know how to personalize to the customer?

When Hertz assigns me a car, they could load into its computer things like the dimensions of my body, so that the seat and mirrors are already set for me (simply remembered from the last time I rented such a car, for example.) If I have a co-driver, a switch would set them for her. The handsfree unit would be paired in advance with my bluetooth phone.

Fast internet access at home has spoiled me. Like Manfred Macx in Tourist I feel like I've lost my glasses when I'm a tourist. I get annoyed that I can't quickly and easily get at all the information that's out there.

When you call to get your voice mail, even from your cell phone, it typically asks for a PIN. There's a reason for that -- there is no authentication on Caller ID, and anybody can forge it. So if you don't require a PIN, and the voice mail let you in directly, anybody could listen to your voice mail or hack it in other ways.

As I've noted, with digital cameras we all take tons of photos, and the next task is to isolate out the winners. I've outlined better workflow for this and there are still more improvements we need in photo management software, but one task both cameras and photo management software could make easier is eliminating the plain bad shots.

I put pens in my pockets. However, sometimes I put them in without caps, or I put in retractable pens without retracting them to keep the tip inside.

The result, as all who do this know, is from time to time a pen leaks out and ruins a pair of pants, sometimes more than that. It's expensive, and hard to solve. Since the earliest days the badge of the nerd has been the shirt pocket protector, but I put them in my pants. You could try tyvek pocket liners, I suppose, but it's hard to see how to easily add them.

eBay has announced sellers will no longer be able to leave negative feedback for buyers. This remarkably simple change has caused a lot of consternation. Sellers are upset. Should they be?