Accoustic Cloaking

Scientists are said to have made a major step forward in ‘cloak of silence’ technology:

Walls of the material could be built to soundproof houses or it could be used in concert halls to enhance acoustics or direct noise away from certain areas.

The military may also be interested, the researchers believe, to conceal submarines from detection by sonar or to create a new class of stealth ships.

I am excited to hear I might someday be able to have silence where I want it, but I suspect this type of control will bring complications. First, there is danger in silence. Sounds have important meaning. Thus other forms of information gathering will need to be relied upon more heavily wherever silence is found. Second, absolute silence is absolute. It will remove the good sounds as well as the bad and thus perhaps create a new need to re-introduce good sounds. This reminds me of “pure” water than usually is far less healthy than clean but naturally occurring water. There are probably many more issues of security here.

The best use I can think of right now is the box of large engines, to help silence vehicles and reduce noise pollution in cities.

Security Buddha Seeks Balls

I ran into a blog called Security Buddha that you might say does not exactly fit the “Buddha” moniker. For example, the author rants about how much he dislikes the other people on the Security Bloggers Network. It reminds me of the old Groucho Marx line “I would not join any club that would have someone like me for a member.”

Maybe it should be called Security Adonoi?

Great comedic relief, but it is hardly the sort of thing I would expect from an enlightened one.

Here is perhaps the best and most telling part:

I am happy to debate you charlatans on a public stage at a conference of your choice about that topic if you have the balls

Why must someone have balls to debate this guy on stage? Is he afraid to lose to a woman in public?

Golf Cart Nation in Danger

About two years ago I wrote a long rant about the stupid policy by General Motors to license golf-carts for zero-emissions vehicle compliance. They even had the gall to try and lobby for speed/safety limits on the golf-carts, while claiming them to be part of the regular vehicle fleet. Either they are equivalent or they are not, right?

Anyway, the AP posted today some revealing safety numbers related to the rapidly expanding golf-cart nation:

The research found that over a four-year period, nearly 50,000 people were hurt in accidents involving golf carts.

One of the studies, by the University of Alabama at Birmingham, said about 1,000 Americans are hurt on golf carts every month. Males aged 10 to 19 and people over 80 had the highest injury rates.

No surprise there. I think those are the same high-risk groups as with (dare I say it) regular vehicles.

A separate study by the Center for Injury Research and Policy at Nationwide Children’s Hospital in Columbus, Ohio, said annual injury rates for golf carts increased 130 percent over 16 years ending in 2006. The report said falling or jumping out of carts accounted for the largest number of injuries, 38 percent.

“Part of it is there are more people using them. Part of it is they are using them in more places,” said Tracy J. Mehan of the injury research center, noting many carts can reach speeds of 25 mph.

25 mph! Who are they kidding? If you can not go faster than 25 mph, you should not qualify as a fleet vehicle. You certainly can not drive on the Eisenhower interstate system, and are probably a hazard on any road including deserted county roads. A bicycle can probably average a higher overall speed than a golf-cart and a horse most certainly can, especially in rough terrain where falling and jumping are most likely. My point is that speed is not new, nor is it the only factor in safety issues:

“A lot of people perceive golf carts as little more than toys, but our findings suggest they can be quite dangerous, especially when used on public roads,” he said in a statement.

McGwin recommends driver education and safety standards for golf carts, which are largely unregulated. He also called for the use of helmets and seat belts and better golf course design to reduce steep hills, sharp curves and other hazards.

Exactly. GM and the American President did a fine job betting their farms on a vehicle that represents little more than a giant loophole in good sense. Now regulation will have to step in and beat some sense into the American companies that make these things. In the meantime, car manufacturers overseas (who did not attempt to pretend a golf cart would be a suitable vehicle) threaten to steam past GM with full-size vehicles that can meet future safety and emission requirements.