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Comment: What's the point? (Score 1) 181

by Qbertino (#47943653) Attached to: Slashdot Asks: What's In Your Home Datacenter?

What's the point? Eat's power, wastes my time, is noisy, etc.

I've got two 1TB USB HDDs for archive and longterm storage (USB powered, to avoid the hassle with powerbricks) and I regularly archive to one of those and then arsync to the other twice a year or so, so they're basically manually mirrored. I've got three smaller Timemachine/Incremental Backup drives (again USB, USB powered) for sequential backup and disaster recovery, should one of my laptops (MB Air & Lenovo Linux Thinkpad) or my Mac Mini crash its HDD/SDD.

I do not have a landline internet connection, but that's a different story. I find I use my time more usefully. I've got plenty of broadband at work and at Starbucks or Tenten. For private Inet sessions I go there for a few hours saturdays or sundays. When I'm of the grid I hang out with my daughter and her mom, go dancing, meet with friends or read a nice book. So no need for fiddling with oversized hardware on that side either.

Comment: Mountain Don't in Canada until 2012 (Score 1) 261

by tepples (#47939465) Attached to: Study Finds Link Between Artificial Sweeteners and Glucose Intolerance

Also, what’s up with caffeine-free diet Mountain Dew?

No sugar, no caffeine, might as well call it Mountain Don't. But seriously, some countries ban caffeinated beverages that are light in color. All Mountain Dew citrus soda sold in Canada, for instance, was caffeine-free until early 2012.

Comment: Re:The sad part is... (Score 2) 168

by bluefoxlucid (#47938679) Attached to: Snowden's Leaks Didn't Help Terrorists

That's stupid.

If the terrorists changed their tactics, and you state that they've changed their tactics, you're revealing that the terrorists took action in response to finding out you've been monitoring them. If their new tactics made them vanish, made them hard to read (encryption), or did nothing, you would still notice: you'd notice them disappear if they completely beat you, or you'd notice their tactics change if their new tactics were just as ineffective as the old ones. As you say, giving terrorists information which they act on does help them, even if their response doesn't gain them anything; so saying in public that the Snowden leak helped terrorists, in any situation where they responded to the leak by change, is both accurate and not revealing.

If you confirm that the leaks haven't helped the terrorists, then you're only confirming that the situation hasn't changed. This would only happen if the terrorists didn't gain enough information from the leaks to make any changes--useful or otherwise--and thus you would confirm exactly what the terrorists know: that they don't know if there are any leaks, what the extent of the leaks are, and where those leaks may be. This is, again, unhelpful.

Comment: Re:The sad part is... (Score 5, Insightful) 168

by bluefoxlucid (#47936817) Attached to: Snowden's Leaks Didn't Help Terrorists

The report is a lie.

Terrorist groups have absolutely changed their behaviors and communications patterns to increase obfuscation and move attention away from their important operations. The United States National Security Agency, the US Military, and other terrorist operations have added increased layers of misdirection to better cover and draw attention away from their most critical activities.

Comment: Re:Nope they are clever (Score 1) 301

by bluefoxlucid (#47936241) Attached to: Apple Locks iPhone 6/6+ NFC To Apple Pay Only

The liability shift from Visa's incredible marketing of the Visa Shield protecting you from identity theft with charge backs and banks calling you to tell you they're declining a suspicious gasoline charge in California after you've been using your card in Vermont all morning and since forever to "oh, someone else used your card? Well, sucks to be you. We can close the account and give you a new card number."

How do I turn this into a hot story to get the production crew salivating over running this on the evening news?

Comment: Re:Too bad (Score 1) 190

by bluefoxlucid (#47935995) Attached to: Wave Power Fails To Live Up To Promise

Really? Because the installation of an AC and heat pump here is expensive, and the heat pump is wildly inefficient in the winter. It's good for the temperate season in the spring and fall, a total of about 3 months per year; there's 4-5 solid months where a heat pump trying to heat my house is either ineffective or a huge energy hog pulling in tons of electricity per unit heating. My most efficient option has been using a space heater in whatever room I'm in, keeping the rest of the house at 62F; otherwise I spend $300+ per month on natural gas at 1,400,000 BTU for my 1300sqft house.

You fail to mention how much of that solar thermal energy would simply be wasted (shoulder seasons, summer overheating) because you have no use for it.

I did mention the use of more efficient (20%-30% vs 14%-19%) sterling heat engines for power generation, but figure you'd use most of the heat directly and get little benefit. Sure, with a dT of 600C, you can pull 38% or even as high as 42% on a sterling engine; but at 300C vs 10C, you're going to get 20%, maybe 25%.

Solar hot water systems tend to heat the 150L tank to a maximum 190F before shutting down, in the first 2-3 hours of the day; a thermostatic mixing valve provides 120F-130F off the tank. This allows for less hot water usage when the water is hot, and stable temperature as the water cools, as people take showers at night or in the morning. Residential evacuated tubes have boiled coolant at temperatures as high as 350C in unusual conditions, but are commonly accepted to run as hot as 300C, and typically don't exceed 285C. It's considerable that a system running less than 5L of water in a loop can heat 150L to almost 90C from tap cold (10C) in under 4 hours.

In practice, people have a single 1.2m^2 panel here, running their hot water at 160F in the winter with short days, not quite enough to use hydronic heat. 2-4 panels would do it, at $500 each, with proper insulation.

Comment: Re:Must be an american thing ??? (Score 2) 46

by mcgrew (#47935755) Attached to: More unsurprisingly conservative ads on slashdot

You can get your old account back if you can remember what your email address was. Send a note to help@slashdot.org.

I'd lost my account and they were very helpful about it.

As to your surgery, LISTEN TO THE DOCTOR!!! Helping that one person could prevent you from helping others in the future. Oh, and I empathize; I had a vitrectomy in 2008. Not the least bit fun.

APL is a write-only language. I can write programs in APL, but I can't read any of them. -- Roy Keir

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