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Comment Re:useless for strong passwords (Score 1) 61

I'm not sure I've seen any independent study which investigates such questions satisfactorily. (You may interpret that as [citation needed].)

Bessner and Davelaar, 1982. "Basic processes in reading: Two phonological codes."

And looking in from the opposite direction, I've also yet to see someone build a 4-simple-english-word rainbow table to directly attack the claim of security.

You don't need to count to 10^5^4 to know that it's a big number, far greater than the search spaces currently achievable with rainbow tables. Barring a monumental flaw in the hash function, the decreased per-character entropy shouldn't make a difference. (Though I guess it depends on how many "simple english words" you consider there to be.)

Certainly, in the field of memory, I am prepared to believe I am far from the norm. I have an exceptionally poor memory for almost everything. During my academic career I could never remember high level theories or identities, and had to repeatedly derive them from basic principles before using them.

With you on that one.

Comment In Defense Of Evil Plutocrats (Score 1) 199

According to their investigation, when reactor parts fail or systems fall out of compliance with the rules, studies are conducted by the industry and government. The studies conclude that existing standards are 'unnecessarily conservative.' Regulations are loosened, and the reactors are back in compliance.

I hate to come down on the side of Big Industry, but this is exactly how things should go. First of all, of course compliance problems spur studies on whether the standards are too conservative. If there's no difficulty in complying with the standards, why bother to do a study? Secondly, of course standards are going to be loosened over time. When you make the first nuclear reactor, you want to have incredible safeguards, even where they seem conservative, just in case. Then, once you've got fifty years of nuclear power under your belt and you have a more informed idea of what's important and what's not, you revise the standards.

That's not to say that nothing smells fishy here, of course. If these "studies" were performed in a biased and unscientific manner, and/or without enough transparency to determine how much bias affected the outcome, then that in itself is the problem. And when a single standards-loosening turns out to have been unwise, that should properly throw doubt on the conclusions of many related safety studies. But the framing of this story seems to be "science can prove anything". No, just bad science... and the solution is not to stop doing science.

The Media

Google's New Meta-Tags For News Story Authors 71

EreIamJH writes "Google News is experimenting with meta-tags in an effort to ensure that the correct news source is credited with an article. The original-source meta-tag will identify the newspaper that breaks a story, while syndication-source is for everyone who repeats the story. Both meta-tags can appear multiple times — for instance an article that sources information from other articles would include an original-source tag for each article used in preparing the new article. While the intention is worthy, I look forward to lots of snarky blogger fights as journalists vent their hurt feelings for having been omitted as an original source."

Comment Re:Helium (Score 1) 184

Okay. The density of helium is about one sixth that of air, so one kilo of helium can lift about five kilos of not-helium. They mention lifting 150-ton loads, which would require 30 tons of helium. Worldwide production of helium is about 30 million tons a year. I think it'll be okay.

The Military

Air Force Wants Reusable Fly-Back Rockets 94

FleaPlus writes "The Air Force is initiating a pathfinder program to develop a first-stage rocket booster capable of gliding back to a runway so it can be easily reused. Lockheed Martin has already launched a secretive prototype, and a Cal Poly team has a prototype based on Buzz Aldrin's Starcraft/StarBooster design (video). The Air Force estimates such a booster could cut launch costs by 50% over the current Atlas 5 and Delta 4 rockets, and could also offer a rapid surge/replacement capability if combined with reusable spacecraft like the recently launched X-37B. Initial test flights are planned for 2013."
Bug

Passage of Time Solves PS3 Glitch 147

An anonymous reader writes "A quick update on the widespread PlayStation 3 glitch we discussed recently: as of last night (Monday, March 1st) the problem has resolved itself. I powered up my PS3 to find the clock was set to April 29th, 2020, but once I went into the system menu and set the date and time via the internet I got an accurate date. That seems to be the test of whether your PS3 is 'fixed' or not; Sony says you should be all set."

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