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Comment Re:And what about Wi-Fi (Score 1) 89

My money is on wifi not working right.

Wifi is a crapshoot in crowds that size, especially when you consider that > 90% of the fans in the stands have smartphones, all of which at least have wifi on and most of which probably have some setting that automatically connects them to open networks. At a minimum there's a bunch of RF noise from this alone.

It's worse if you consider the number of stadiums that install wifi -- I've never been to one where it worked well and in many it doesn't work at all. And stadiums themselves are often a clusterfuck of management, "operated" by the team in terms of cash revenue but managed by some stadium commission as a physical facility so that the local taxpayer can pick up the tab for annoying facility costs that aren't related to making the team owner richer.

It wouldn't surprise me at all if older stadiums retrofitted with wifi were done so on the local sports facility commission/taxpayer's dime and had all the usual corners cut as one might expect with such a project. The expectation (and effort) was probably decent coverage in luxury boxes, locker rooms and press areas. Fan seating areas get "covered" with a visible 2+ bar SSID, but nobody was willing to pay for RF engineering a workable solution for 70,000 people to actually use it.

So at best they're operating in RF soup with proper APs nearby, hoping that between signal proximity and operating on the 5 Ghz band they will get useful coverage. At worst they're working in RF soup off a crap solution.

Ideally, their software would be designed to be as network-independent as possible so that as much useful work as possible could be done without any network signal. But what do you bet it's a bunch of BS cloud based bullshit, dependent on appy Azure apps that Microsoft is hoping NFL teams and their corporate leaders will buy into even further.


Researchers Predict Next-Gen Batteries Will Last 10 Times Longer ( 109

Lithium-metal electrodes could increase the storage capacity of batteries 10-fold, predict researchers at the University of Michigan, allowing electric cars to drive from New York to Denver without recharging. Using a $100 piece of technology, the team is now peeking inside charging batteries to study the formation of "dendrites," which consume liquid electrolytes and reduce capacity. Slashdot reader Eloking quotes New Atlas: Battery cells are normally tested through cycles of charge and discharge, testing the capacity and flow potential of the cells before being dissected. Dasgupta and his team...added a window to a lithium cell so that they could film the dendrites forming and deforming during charge and discharge cycles.
In a video interview they're reporting that dendrites can actually help a battery if they form a small, even "carpet" inside of the battery which "can keep more lithium in play." According to the article, "The future of lithium-ion batteries is limited, says University of Michigan researcher Neil Dasgupta, because the chemistry cannot be pushed much further than it already has. Next-generation lithium cells will likely use lithium air and lithium sulfur chemistries."

Comment Smartphone with VMs? (Score 1) 358

It'd be nice if we could run a phone VM on our phones.

The security uncaring could run everything in the "native" phone session, just like any smartphone now.

The security conscious could run a phone VM which would would contain all their sensitive data. Access to the phone VM could have more complex authentication methods.

Comment Re:If we're following protocol (Score 1) 315

I think the media hasn't been all that fair to Trump. It strikes me that Trump is quoted without context and they take things he says so literally without reading between the lines or really reporting what he says in anything like the manner his audiences understand what he's saying.

To be fair to the media, Trump doesn't have a traditional ideology and I think the media struggle to report on him because they don't find any of the traditional ideological interfaces to connect with. And Trump says some pretty bizarre and stupid stuff, quite often.

Comment Re:If we're following protocol (Score 1) 315

I think they already do and I think the major media outlets have been soft-pedaling leaked Clinton campaign documents. They've been reporting on them but it sure feels like selective and soft reporting designed to minimize perceptual damage to Clinton.

If they took leaked emails related to Clinton and really ran with them, it could conceivably damage her campaign, so they aren't.

Personally, I think they underestimate just what Clinton backers will tolerate and are miscalculating by soft-peddling the information, because in the long run it destroys their credibility. If they would really light her up it wouldn't make Trump look any better AND the media would regain some of their credibility.

Comment Re:No they won't. (Score 1) 373

There's two problems. One is the arbitrary labeling of gun control measures as "common sense", two is that gun control advocates never bring anything to the table -- it's their "common sense" gun control policies only, they refuse to compromise anything to get what they want. They are willing to give NOTHING in return.

I always wonder what would happen if both sides would bargain freely on the topic what either side would give away in exchange for some kind of restriction.

Would gun control advocates agree to exempting suppressors from the NFA in exchange for closing the "gun show" loophole? A carry permit valid nationwide in exchange for deeper background checks? Re-opening the machine gun registry in exchange for a national registry of all guns?

Comment For all the night shift Tesla owners (Score 2) 80

Sure, you could charge a powerwall and then charge your Tesla at night from that, but there would be a lot of inefficiency in addition to heavy cycling on the powerwall.

But overall it doesn't seem like a compelling sales pitch -- buy solar panels to charge the car that will be at work when the sun is shining.

Maybe the spreadsheet math works financially by offsetting daytime use vs. nighttime charging.

Comment Re:Signal triangulation = GPS (Score 2) 161

Some weapons are GPS-guided, such as JDAM-assisted bombs.

The world is gearing up for a heated conflict. Wether it occurs or not is a different story. But last month's US chief of armies gave a chilling speech where they expect mass casualties within 10 years, to the likes of WWII.

The nations are placing their pieces on the map and gearing up for defence. GPS denial devices is an obvious counter-measure, assuming it actually deter military -grade GPS systems (which are far more precise than civilian ones).

Comment Re:Terrible Power Cables (Score 1) 190

I go through enough of it that I've only had one little packet expire. I usually buy a 5 pack through Amazon and keep the unused stuff in the fridge, which is supposed to extend the life further.

I've thought of vacuum sealing it as well, but since I use enough to not have it expire on me I haven't gone that far, plus its sealed well in Mylar and I expect that exposure to air only accelerates curing and that it would self-cure even in a vacuum.

Another option is silicone tape, but the stretching needed to apply it would be a challenge on small stuff like USB cables.

The small tubes of regular clear silicone caulk (the kind that doesn't use a caulk gun) can be used instead of Sugru in some applications, but it gets kind of messy. If you're willing to waste a certain amount, you can mix cornstarch with regular silicone caulk and get a Sugru-like product that cures faster and is easier to handle, but it's messy to make.

Comment Re:Yeah, that's one of the funny things about law (Score 1) 264

Use of force gets complicated, fast.

In Minnesota, you can use deadly force to stop the commission of a felony in your home.

The felony doesn't have to represent a risk of physical harm, although I think it would help -- shooting a 16 year old kid with your iPad, about the climb out the broken window he came in might be something the DA would consider charging, if only for the DAs own personal PR.

The adult with any kind of a weapon, especially a firearm? They've met the definition of a felony right there, plus there is the risk of harm.

Comment Re:Terrible Power Cables (Score 4, Interesting) 190

I find the worst point with all of them is near the end of the cable where it hits the connector.

If I think a given cable will get used regularly, I now just grab a pack of Sugru and add my own strain relief at that point. I find it helps a lot, but on one cable (and I forget which of the 28934774 cables I own it was...) it just moved the fray point from where it would naturally occur near the connector to the point where the Sugru tapered off.

I think the only other thing a person could do is both add their own silicone strain relief and maybe dunk the cable a few times in dip-it vinyl coating to armor the cable further.

It would be nice if someone would figure out that high-quality cables were desirable and make USB versions of welding cable with thick, high-flex EPDM jackets. I could definitely use a couple of Ethernet cables like this.

Comment Re:Weird... (Score 1) 66

I don't know you, but I'd wager you're like me and you and I probably think of this in terms of $24 billion now versus...working.

I think guys like Zuckerberg are just mentally in a different place. They're not in it for the money, they're in it for the rush of running a massive, growing company.

Money isn't even part of the equation, and I'd bet even at the time money and even the act of paying for something wasn't something Zuckerberg even thought about. He just went places and did stuff, his view of money was the company financials, not his personal finances at all.

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