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Comment Re:Extra battery? (Score 1) 163

They are. I have a 15000 mAh unit; two, 2.4 ampere outputs. Wouldn't be without it, can't really, at least unless the companies making the cellphones stop putting too-small batteries in them. last weekend I drove five hours, during about 3 of which we were either completely out of contact or only in distant contact with a cell tower (Montana... lots and lots of empty space.) When we left the city, my phone was at 25%. I kept the phone (a Galaxy Note III with an aftermarket "big" battery that's good for about 48 hours here, where we're within about 4 miles of a cell tower) plugged into the external unit for the entire trip, and when we got home, the phone was at 100% and the external unit at 45%, which allowed for both charging it and running it.

Really, won't even consider being without that external unit. As for a pager... no. Just no.

Comment Re:congratulations! (Score 1) 26

Yes. Because it's not a simulacrum, it's a greatly simplified model. That it works at all suggests you've discovered at least a few of the important principles that let the vastly more complicated original work.

Also, you can poke at the model, see what improves it, what breaks it, plot receptive fields, all those things that are messy, difficult or unappreciated in an actual brain.

Comment Re:Anyone can answer? (Score 1) 410

From various observations (and the theory of general relativity) we're pretty sure gravity propagates at the speed of light. You find gravity everywhere because it's already there, the same way that walking from a dark room into sunlight doesn't imply that light travels from the sun to your eyeballs instantaneously.

If the sun were suddenly dematerialized you would continue to see sunlight for another eight minutes. We are also fairly sure that the Earth would continue in it's orbit as if nothing had happened for eight minutes, until the gravitational effects of the disappearing sun had time to propagate.

Comment Re:Cool! (Score 1) 410

Since Newton we've made a variety of observations that we're fairly sure imply gravity propagates at a finite speed. If that's true, it's very difficult to construct a theory that doesn't include waves. Realistic MOND theories (i.e. more than just "GR is wrong.") include gravity waves, although they might disagree with relativity about how easy they are to detect.

Comment Re:Cool! (Score 1) 410

There's no way we're going to focus gravity waves any time soon. But (I think) you could build a gravity wave interferometer. LIGO effectively IS sort of a gravity wave interferometer right now, with the baseline between the two sites giving it the ability to determine the rough direction to the sources. If you wanted to build up an image you'd need a lot of LIGOs, but it would be possible. And awesome.

Comment Re:Self-Selection? (Score 5, Interesting) 281

First impression: somebody needs to learn about statistics that have more than one predictor variable.

Second impression: despite the lack of appropriate analysis, the differences in figure 5 are big enough to be reasonably clear. It looks like there is discrimination against anybody who has a gendered profile (maybe maintainers don't like pictures?). This discrimination might be slightly greater against outside women, and is fairly likely greater against inside men.

Third impression: the paper and the Slashdot summary have a strong gender bias; they mention only the small and borderline significant anti-female bias while ignoring the more significant anti-male bias and also the much larger anti-(either) gender identifiable bias.

Comment Re:Just a thought... (Score 1) 281

I believe he was trying to say "practically insignificant." It's a necessary companion to statistically significant, where you look at the size of the effect and decide whether it makes any difference or not, even if it is true.

I haven't read the article so I don't know if he's right, but his general point is good. The p-value isn't the only thing that matters.

Comment Re:Advertising ROI (Score 1) 286

When a significant number of people cut their (ad supported) cable and subscribe to Netflix (no ads), then ad supported programming is decreased. All the stuff about the channels pandering to their audience may be true, but it's irrelevant. Note that, despite the existence of Hulu (apparently, I'm in Canada) Netflix continues to expand. There is a growing market for ad-free television.

The super bowl is a special event that happens for a few hours every year. Yes, ads for the super bowl cost a lot. But they also cost a lot last year. We don't know how well an ad-free Super Bowl would do, because it simply aren't offered that way. The super bowl is also a bit of a special case because the ads cost so much that advertisers put more effort into making them entertaining. How well would an ad-free Netflix-like sports service do against regular ad supported sports?

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