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# Comments

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### Door-To-Door Mail Delivery To End Under New Plan

Re:Already happening (867 comments)

You're analogy is incorrect. In a star topology, you claim the mail carrier can't go from house to house, he goes from hub->spoke 1->hub->spoke2->hub, etc. Whereas in a ring he can go spoke 1->spoke 2-> etc. Thus his steps taken are N for ring, and 2N for star. The problem is for a cluster box, star as you call it, that serves N homes, the postal carrier only goes to 1 place, where as for a ring of N homes he must go to N places. There is no need for the postal carrier to visit the spokes with cluster boxes. So going door to door is O(n) whereas cluster boxes is O(1).

about a year ago
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### Ask Slashdot: Is the Bar Being Lowered At Universities?

Re:A constant can't explain a variable (605 comments)

I'm not sure why learning how to teach effectively isn't high on the list of objectives. Its all the college PR campaigns spit out along with research, but the latter is all that matters. My wife was a 21 year old grad student and handed a large class of Sophomores and Juniors to teach a 200 level course. She had one-semester under her belt as a TA prior, but no formal training on how to teach, etc.

I have professors who ramble on during examples of the most mundane things simply throwing more and more effort into a failing effort. And there are the complete opposites who never cover the material clearly and never ask students if they understand.

about 2 years ago
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### Ask Slashdot: Is the Bar Being Lowered At Universities?

Re:University Professor Here (605 comments)

As an adult student who has gone back to school, I want to say something as well.

We have seen a dramatic decline in the knowledge retention of students because professors are not trained on teaching methods. Even strong professors who are very prepared on paper have major and substantial gaps in their ability to communicate. Students are struggling to manage this situation. Do you let them teach to the students in a way that just forces memorization? Or do you only learn the course content at a level consistent with the professor's ability to communicate? Do you somehow split the difference, or if so, how? These are the questions we are trying to answer.

about 2 years ago
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### Half-Life of DNA is 521 Years, Jurassic Park Impossible After All

Re:Someone forgot to tell these guys (315 comments)

You're assuming exponential decay, something that radioactive elements do. This isn't said to be exponential decay. "half-life" doesn't require exponential decay.

more than 2 years ago
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### Half-Life of DNA is 521 Years, Jurassic Park Impossible After All

Re:Someone forgot to tell these guys (315 comments)

Nothing about this decay was ever described as non-linear. By their measure, it would be gone in 1042 years, maybe less.
If say there is a fixed number of enzymes and they can destroy a fixed number of bonds per year, it would be linear.

"environmental conditions such as temperature, degree of microbial attack and oxygenation alter the speed of the decay process."
They also are doing this in ground burial scenario, presumably unfrozen. Mammoth carcasses are still found as they sometimes exist in unfrozen earth for only a small portion of time per year.

more than 2 years ago
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### Counterfeit Air Bag Racket Blows Up

Only 37%, really? (288 comments)

"But only 37 percent of auto dealers have their own body shops, according to information on the National Association of Automobile Dealers' website."

Ok, I've NEVER seen a franchise dealer who doesn't also have a repair shop. It may not be onsite, but at another one of their locations, etc. I think of a body shop as a TOTALLY different thing, art vs mechanical, if you will. Many dealers will use a local body shop for body work. As far as repair, thats where dealers have a good chance to make money. All the little old ladies take their cars to their dealer for oil changes at \$80 a pop.

This number must be including non-franchised dealers, as in used-car dealers.

more than 2 years ago
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### Did Microsoft Know About the IE Zero-Day Flaw In Advance?

Re:Not sure what the problem is here (123 comments)

This is typical 0-day process. I'm not sure why there is now a problem with the 0-day ethics. But companies that sell their 0-day protection have always paid for and then given to M\$ and 0racle (0-details), etc while leaving their customers protected. This is part of the "No more free bugs" approach, it provides a legitimate way to sell your discovery which someone worked towards, while knowing it is going to be responsibly disclosed and tracked and even that some people will be nearly immediately protected in some cases.

more than 2 years ago
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### Analyzing the New MacBook Pro

Re:More than 1080p (914 comments)

You do realize that switching resolutions doesn't change the screen aspect, but only the linear pixel count? You you've effectively stretched things vertically. You would need horizontal black bars to effectively create a 1920x1080 screen on a 1920x1200 native display, otherwise you're skewing the image. So unless you added black bars or changed to new display hardware, you're not watching things in 16:9 or 16:10.

more than 2 years ago
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### Stuxnet/Flame/Duqu Uses GPL Code

Re:Who gets to request code? (221 comments)

There is no burden to release code if it was never distributed or sold.

more than 2 years ago
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### Whose Cameras Are Watching New York Roads?

Re:Get a bat (376 comments)

So uhm, where is the power source? Either these things have some of the most awesome power efficiencies ever discovered or someone is swapping the batteries on a routine basis or they are plugged in. Just cut the battery wires if you plan to steal it. It is probably programmed to come right back to life when you get it safely home and have removed the GPS module.

more than 2 years ago
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### Among APs I detect, the secured:unsecured ratio is:

Re:9:0 here (277 comments)

Depending on which direction you approach 0 from, it could be infinitely worse.

more than 2 years ago
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### Astronauts Open Dragon Capsule Hatch

Enter the Dragon (138 comments)

I've heard that somewhere...

more than 2 years ago
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### Ask Slashdot: Best Option For Heavy-Duty, Full-Home Surge Protection?

Re:cuz \$350 is going to bankrupt YUO ! (341 comments)

Current divides based on the ratio of admittance, not resistance. Which, yes, is the inverse of ohms.

The best bet is to have a good, heavy gauge copper ground at your breaker box / meter. The admittance ratio to ground will be the highest there.

more than 2 years ago
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### Ask Slashdot: Dealing With University Firewalls?

Re:get over it (582 comments)

Ass|u|me

You assume that this is a public university, and by and large, I think that's irrelevant. Students are paying for an education, not a degree. I'll open a corner market selling degrees if you'll come in and buy one. To say what you wrote is to say, students are "paying for their degree, not access to a comprehensive library. They will only see books directly relevant to their degree, nothing more." So, I'm sure you, in your infinite wisdom, can effectively make a comprehensive, always up-to-date list of approved books, periodicals, etc?

This sounds like a possibly religious-based school. Those of that only schools I've run into who have filtered internet. Some public schools might limit outbound services, but I haven't seen much content filtering. Most school networks I've used have had separate dorm/student and university/faculty/staff networks. With computer labs being on the university network.

more than 2 years ago
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### Ask Slashdot: Network Backup Solution Out of the Box?

Re:CrashPlan (251 comments)

Yes, I use crashplan too and it's great. However, its important to note that you don't need a subscription to do what the OP asks. The free version will backup daily to a remote machine running crashplan connected to the target backup drives. You only need a subscription or what used to be called the pro version for certain advanced encryption, immediate backups, etc. A subscription allows for off-site backups to crashplan's servers and they have both commercial and residential plans.

more than 3 years ago
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### Ask Slashdot: Dealing With the Business Software Alliance?

Re:Audit? (519 comments)

We had this happen all the time. We just entered into an audit agreement. They gave us software to scan our systems, we ran it in a GPO script. Voila. It spits back a report of how many instances there are.

more than 3 years ago
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### Researcher Finds Dangerous Vulnerability In Skype

Typical XSS response (42 comments)

I love how companies always downplay XSS. They figure it can only be used in the way shown and assume there is no other way to weaponize a vulnerability other than as presented.

more than 3 years ago
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### School District Hit With New Mac Spying Lawsuit

He is suing because he is embarassed of himself? (330 comments)

"was shocked, humiliated and severely emotionally distressed at what he saw"

Talk about regret.... Maybe they caught photos of him cross dressing or playing with his dolls.... But he must really be embarrassed to sue for the statement above.

more than 3 years ago
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### Collatz Proof Proposed: Hailstone Sequences End In 1

Can I try? (90 comments)

I'm not a math major, and I have very little experience with any proof. I've never written one. But I would first think this is a 3 part problem. One of n=even, n=odd and n=2^x. Proving all will become 2^x seems to be the goal.

Any even integer n divided by 2 is an integer half the value
Any odd integer n multiplied by 3 is an odd integer.
Any odd integer n plus one is an even integer

Through induction, any power of two in this sequence will end in 1. That is to say if n_0 is 2^x, then the sequence will always be even and always end in 1. 2/2 =1, 8/2/2/2=1.

As an infinite sequence, n will always become odd for any even n_0, not a power of 2.

Since odd n always have 1 added, they will eventually become a power of 2.

more than 3 years ago
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### Groupon Deal Costs Photographer a Year's Free Work

Who's fault is it anyway? (209 comments)

From my point of view, the photographer knew what he was getting into. It seems the groupon terms are straight forward, they take half, etc. He should have set his maximum coupons to maybe 20 or 30, not 301. He should have been more aware of his costs including time to setup and drive all over. At this point, I'd offer to refund the money to all customer, and cut your losses. Then take an intro to business class at your local community college. Refunding would cost him £4365 if he couldn't get Groupon to chip in any.

more than 3 years ago

# Submissions

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### Contacting a company hoping to get security work?

funnyguy (28876) writes "Recently, I was watching my wife show off a web application her company authored and they are apparently partnering with some other companies to share code, etc from this application. It is Internet-based, and from previous experience with her company, was destined to be littered with security flaws. From an initial quick look, the site does seem to be seriously flawed. I want to inform them of the flaw but I also am searching for new clients in my field, computer security, as a consultant. What is the best way to let this company know about the flaw with the possibility of getting a contract (paid!) to do further security analysis and remediation? I basically don't want a "Thanks, we'll look at it" or a "Why are you testing our security?!!!"."
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### Amazon releases 80's looking wireless media device

funnyguy (28876) writes "Amazon today introduced their Amazon Kindle device. It allows users to wirelessly access news and books to read while sipping lattes at the coffee shop. It works by using EVDO for data transfer and does support some other file formats (word, images) that can be emailed. It retails for \$400 and has no monthly fees. They apparently expect to make enough money from the news and book sales to pay for wireless costs. It also includes a high resolution display with "Revolutionary electronic-paper display", full QWERTY keyboard and is about the size of a small notepad. May be an interesting device to see if other OSes can be loaded and use the free EVDO."
Link to Original Source

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