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Comment "Why" matters a lot... (Score 1) 267 267

Depends on "why" you're trying to block access:

Surfing Facebook is a productivity hit? A time bound exception (30 mins at a time) might be a viable approach.
Porn? Probably no valid reason to surf porn at most jobs.

As a previous poster said, if you're really concerned about malware / C+C servers etc, blacklist everything, whitelist a hand full of websites required for the job.

Comment Re: tfa says carry-on, one-way (Score 5, Informative) 349 349

So book 2 one ways: JFK-LAX-???, LAX-JFK-???.

You don't *have* to book that as a round trip, although if you book the return leg on the same airline you throw away ??? You might have your return leg cancelled.

Fwiw frequent fliers have known this for years. Search the forums at flyertalk.com

Comment Re:The obligatory NSA question (Score 1) 128 128

for one, SHA-2 is a hashing algorithm, not encryption. Secondly, although the math is sound, the algorithm which generates the seed for the PRNG is allegedly based on constants which make the crypto trivial for the NSA to brute force.That algorithm is known as Dual_EC_BRDG.

Space

New Molecule Could Lead To Better Rocket Fuel 121 121

MithrandirAgain writes "Trinitramid is the name of the new molecule that may be a component in future rocket fuel. This fuel could be 20 to 30 percent more efficient in comparison with the best rocket fuels available today, according to researchers (abstract). The discovery was made at the Royal Institute of Technology (KTH) in Sweden. 'A rule of thumb is that for every ten-percent increase in efficiency for rocket fuel, the payload of the rocket can double. What's more, the molecule consists only of nitrogen and oxygen, which would make the rocket fuel environmentally friendly. This is more than can be said of today's solid rocket fuels, which entail the emission of the equivalent of 550 tons of concentrated hydrochloric acid for each launch of the space shuttle,' says Tore Brinck, professor of physical chemistry at KTH."

Real programmers don't bring brown-bag lunches. If the vending machine doesn't sell it, they don't eat it. Vending machines don't sell quiche.

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