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Comment Re:Walmart also uses direct solar (Score 1) 57

Sorry for posting anon, but having difficulties logging in right now. Also, full disclosure, I'm a property technician for Target.

There's also a big difference in how Target and Walmart design their stores. There are a few stores Target has that uses direct lighting in, one in the greater metro Detroit area. For the most part though it isn't as feasible with how they have their drop ceilings set up. Walmart uses a more industrial design with a high, exposed girder system and full runs of florescents across the entire building. Target on the other hand uses a drop ceiling with an average height of 14ft and a floor with a high gloss finish to maximize the uses of it's grid pattern lighting solutions. Any type of direct lighting would be difficult to add into the brand image Target has for it's stores.

Thanks for the info, I've noticed the difference in style but didn't give it much thought. Still, it would be nice for them to figure out a way to get the best of both worlds.

Comment Re:Walmart also uses direct solar (Score 1) 57

This. Commercial PV panels are about 18% efficient at converting solar energy into electricity, and the best fluorescent bulbs are about 15% efficient at converting electricity into light (the rest becomes heat). So if you install PV panels to power your lights, you're only converting about 2.7% of the sunlight hitting your solar panels into interior light.

Fluorescent lights are around 80% efficient (similar to LEDs). Incandescent lights (traditional light bulbs) are around 15% efficient. It's why you can replace a 60W light bulb with a 13W CFL.

Uh, no. An incandescent bulb is 3-4% efficient, 5% efficient at best (that is 5% of the energy is emitted as visible light, 95% is emitted as heat). Fluorescent bulbs and LEDs are far more efficient, but nowhere near even 50%. Fluorescent bulbs are around 4x as efficient, LEDs around 6x.

Using direct lighting instead of PV + electric light is a huge win, and leaves the rest of the roof open for PV installation if you want.

To give an idea of how much lighting is used, I counted the lights in a Hobby Lobby last time I was there (what else would a guy do in there?) and they had about 3000 40W fluorescent lamps. That's 120KW just for lighting (most of which turns into heat that the A/C has to pump out, by the way) which works out to about $12/hour here in TN. Walmarts don't light as brightly as a Hobby Lobby, but they have larger stores. The energy savings from the skylights is really big.

Comment Re:I don't agree that these are "conservative" vie (Score 2, Insightful) 218

Enforcing immigration law is not inherently xenophobic. Deporting all illegals and building a wall to hinder their return sound perfectly reasonable to me.

My wife is from the Philippines, and most Filipinos that I know are actually kind of pissed about the "illegals". When you come here legally, it costs a bunch of money, if you have a work permit it has to be renewed in person annually, and going through the process of getting a green card or citizenship is also expensive. And you get harassed if you don't do everything correctly. You (the American citizens) would be embarrassed if you knew how some folks are treated when they simply want to come here legally.

So, yeah, there's a little resentment when people come here without that sort of pain.

At the same time, we have friends who are illegals and we personally know that most go through other kinds of pain - like walking 1000 miles through the desert - to get here.

Comment Re:There is something to that... (Score 1) 483

but at least they got their audience right, idiots that cant figure out the slightest thing, and they pay the premium for it too!

Or smart people like me who realize that they have better things to do than fuck around with cleaning up viruses...

Comment Re:Were the users randomized? (Score 1) 483

I mean, I'm sure our Linux users overall require the least tech support. But that's a function of who they are more than what they're using.

I don't doubt that Macs require less support, but 40% vs 5% says that something else is going on - and I doubt that sort of ratio will hold once people are converted in bulk.

I see you don't have a computer-using parent. I put my foot down about 10 years ago and told the parents that one of two things was going to happen:

1. The get a Mac
2. They quit bugging me about computer issues

There was no third option. They chose #1. The ratio of problems before and after is far larger than 8:1, probably more around 20:1. You think 8:1 seems like a large ratio - I'm wondering why IBM isn't seeing an even better average. My guess is it's because they already have a significant firewall/anti-virus setup to minimize that set of Windows headaches.

Comment Re:Can't make steel with windmills (Score 1) 333

I understood it just fine.

Actually, you didn't.

"Obama incentivized atomic power as part of his energy policy. I used to be a republican 4 decades ago, this could bring the two major parties together and defuse climate change debates. Bonus: defunding big oil"

He never claimed to be a Republican 4 decades ago. He said that nuclear power was a Republican dogwhistle 4 decades ago. You can go look up what a dogwhistle is in politics if you're unaware. Oddly, I'm not sure the GGP understood that, either.

Comment Re:6.8 Billion (Score 1) 333

Nuclear is eminently doable from a technological standpoint. But like rocketry, a lot of things conspire to make it very difficult to do affordably and safely.

True, but the main competitors up until recently - hydro and coal - have their own problems that aren't as bad a nuclear per generator, but in aggregate are bad. Acid rain and global warming come to mind. With hydro, we lose huge amounts of land (although we at least get a lake out of the deal) but imagine if we could have covered that land with solar cells instead of a lake.

Comment Walmart also uses direct solar (Score 2) 57

Walmart has been using direct solar for lighting for 10+ years now - something I haven't seen Target do anywhere. In a newer Walmart the fluorescent lights only come on as needed to keep the light at a certain level. Noon with bright sunlight will have no electrical lighting on in a store.


The grid of little squares are the solar powered "lights".

Young Target for comparison:


Comment Re:Escalation? (Score 1) 307

Why do people think _they_ are the only professionals?

What "professional" feature is being lost here? The SD-Card reader? Because, arguably, it is _gaining_ features many professionals want: higher speed external connections.

For myself: I'm a professional. I develop high-performance, massively-parallel, multiphysics simulation code that runs on supercomputers. I do not care much at all about any of the external connection capability of my laptop (SD-Card, USB-A, etc.).

The new MBP will still be a very professional machine for me as long as it is powerful and fast.

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