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Comments

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California DMV Told Google Cars Still Need Steering Wheels

ljw1004 Re:Never gonna work ... (506 comments)

You're thinking of the wrong half of the scenario.

The other half is a driver who decides to take control of his/her own volition, for whatever reason.

Like many manual overrides, it's user-initiated, not computer-initiated.

about a week ago
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If Java Wasn't Cool 10 Years Ago, What About Now?

ljw1004 Re:Just don't try to write an OS in Java (508 comments)

It's crazy to solve this with a for loop O(n) when you can solve it with a direct formula O(1).

What exactly are you looking for in your candidates?

about two weeks ago
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How California's Carbon Market Actually Works

ljw1004 Re:Legislate that pi is 4 (97 comments)

If the value of pi was largely driven by human activities, and those human activities were within their jurisdiction, then yes it would be like Indiana.

about three weeks ago
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Why the Public Library Beats Amazon

ljw1004 Re:Libraries are one thing Amazon is not (165 comments)

We take my 10-month old daughter to "Baby Story Time" at nearby libraries. Last week one of the libraries brought in some zoo animals for the kids to pet.

My iPad and SurfacePro aren't as good at telling stories to baby. There's less social interaction and she gets too fixated on the screen. Also tries to eat it.

about three weeks ago
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Comcast Drops Spurious Fees When Customer Reveals Recording

ljw1004 Re:yeah yeah (368 comments)

They offer (some speed) and Qwest only offers (some slightly slower speed)." "Ok, do you really understand what those speeds mean? How much faster is your pr0n going to download at, for instance, 15 Mbps vs 30 Mbps? In real minutes." "30 is twice as fast." "That's only the top peak speed possible from the connection. The actual speed can and does vary wildly. Besides, the speed at the head end of the service you're accessing is much more significant.

I think you're wrong. I started with Qwest, switch to Comcast out of frustration, moved house to a different neighborhood in Seattle, switched to Qwest out of frustration, and switched back to Comcast out of frustration.

Qwest does reliably deliver the "slower than comcast" part of its promise. The headline slower peak speeds are indicative of overall slower peak speeds. Qwest slows things down uniformly and irritatingly no matter what is at the head end of the service.

about three weeks ago
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Brookings Study Calls Solar, Wind Power the Most Expensive Fossil Alternatives

ljw1004 Cost of nuclear decommissioning? (409 comments)

This paper: assumes $0.2 - $0.3 billion to decommission a nuclear power plant (based on a 2013 report by the US Nuclear Regulatory Commission)

UK: $9 billion decommissioning costs per plant, based on an estimate by the UK's Nuclear Decommissioning Authority.

Japan: $1 billion per plant so far, but estimated $1.8 billion per plant for the remainder

I suspect this paper gets its results by downplaying by an order of magnitude the decommissioning costs of nuclear power.

about three weeks ago
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Ask Slashdot: Life Beyond the WRT54G Series?

ljw1004 Get an Apple Airport Extreme (427 comments)

I've kept my old Buffalo running Tomato. It's fine as a router. I like the loopback functionality. I have everything set up find and don't want to change.

But frankly its WIFI was bad. It apparently couldn't cope with the way that modern devices communicate over wifi. Its wifi would get stuck every few days and require a reboot. It's not fast. Its range isn't good.

I just bought an Apple Airport Extreme. Disclaimer is that I work at Microsoft, and joined the company because I'm a Microsoft fanboy. But I bought the Apple base station solely in wifi mode, and it got extra range, and it doesn't crap out as much, and I'm delighted with it. It took an hour to set up (the setup software didn't work on my MBA so I had to install Airport Utilities onto my Windows notebook). But since then it's been running fine without worry.

about three weeks ago
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Oracle Hasn't Killed Java -- But There's Still Time

ljw1004 Re:Just like C then? (371 comments)

The point of async+await is that they're COMPOSITIONAL with respect to other language constructs - e.g. you can put an await inside a for loop, or inside a try/catch block. It's impossible to do compositional asynchrony just as a library.

(and the evidence is in, that compositional asynchrony is a game-changer and significantly more productive than trying to do it with callbacks and libraries).

about three weeks ago
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Oracle Hasn't Killed Java -- But There's Still Time

ljw1004 Re:Just like C then? (371 comments)

You need language innovation for the things that can't be expressed in libraries, e.g.

* async+await from F#/VB/C# (later adapted into C++, JS, Python).
* non-nullable reference types from Haskell/F# (later adapted into Swift)

about three weeks ago
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Harvesting Wi-Fi Backscatter To Power Internet of Things Sensors

ljw1004 Re:iFind (138 comments)

It's very different from iFind...

This paper flat out says that it's impossible to harvest enough energy from RF sources to power any kind of radio transmitter. Instead, it takes advantage of the existing idea that although you can't transmit your own signals, you can at least selectively block or intefere with someone else's RF signals. And the paper's clever invention is to apply this known technique to wifi in particular, so as to work with off-the-shelf wifi routers.

By contrast, iFind claimed it could harvest enough energy from RF to power a bluetooth transmitter.

about a month ago
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Ask Slashdot: Bulletproof Video Conferencing For Alzheimers Home?

ljw1004 Re:Is it really that complicated? (194 comments)

Yeah, we got our grandmother an iPad, showed her repeatedly how to use it over the course of a week, but she has never once been able to do a conversation unassisted. I think you greatly underestimate how difficult it can be for an old person.

about a month ago
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Google+ Photos To Be Separated From Google+

ljw1004 Re:Until Google comes clean (114 comments)

I'd like to know *which* information they aggregate.

about 1 month ago
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Satellite Images Show Russians Shelling Ukraine

ljw1004 Re:Weakest US President ever (582 comments)

Oh I'm sure Russia will affect America. But I what I asked was this:

"Is there a clear course of action in this conflict that will be best for America in the future?"

No, there isn't a clear course of action. It's not obvious which actions would make the situation better and which actions would make the situation worse.

about a month ago
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Satellite Images Show Russians Shelling Ukraine

ljw1004 Re:Weakest US President ever (582 comments)

* Gaza can send thousands of rockets targeting Israeli citizens and they won't even say a word.

Affects Americans right now? -- no. Is there a clear course of action in this conflict that will be best for America in the future? -- no.

* Iran can make nuclear weapons and they won't even say a word.

Affects Americans right now? -- no. Is there a clear course of action in this conflict that will be best for America in the future? -- no.

* Russia can take over Crimea and they get bashed harshly with... a speech.

Affects Americans right now? -- no. Is there a clear course of action in this conflict that will be best for America in the future? -- no.

*ISIS can take over Iraq and kill thousands and they won't say a word.

Affects Americans right now? -- no. Is there a clear course of action in this conflict that will be best for America in the future? -- no.

Now here's a bullet point that you didn't mention:

* Ubiquitous healthcare for Americans

Affects Americans right now? -- YES! Was it a clear course of action that will be best for America in the future? -- YES!

about a month ago
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Verizon Now Throttling Top 'Unlimited' Subscribers On 4G LTE

ljw1004 Won't affect the majority of customers (274 comments)

At first I read about Verizon throttling their "unlimited data plan" customers and I got concerned.

But then I read that the throttling will NOT affect the majority of customers who are paying over the odds for an unlimited data plan that they don't actually need. That's good. So long as they're not affected, things are okay. Please go ahead with your plans, Verizon!

about a month ago
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Autonomous Sea-Robot Survives Massive Typhoon

ljw1004 Re:Is this an achievement? (47 comments)

I don't think WaveGlider is a submersible. It's a surface-vessel, with solar panels!, and with energy-generating fins in its keel. Wikipedia explains: "The Wave Glider is composed of two parts: the float is roughly the size and shape of a surfboard and stays at the surface; the sub has wings and hangs 6 meters below on an umbilical tether"

http://imgur.com/nfdHsn2

So yes, it's impressive as heck that the WaveGlider survived a typhoon. The float part of it will be tossed around like crazy on top of the waves. It will stay tethered to the float part underwater. The tether will be yanked every which way.

about a month ago
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How One School District Handled Rolling Out 20,000 iPads

ljw1004 Re:Yeah, students will use bandwidth (285 comments)

I've never come across a fair, statistically meaningful measure of how "good" a teacher is.

about a month and a half ago
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Apple Refutes Report On iPhone Threat To China's National Security

ljw1004 Re:noone trusts their cya legalese (134 comments)

It looks like it's impossible for Apple to issue an honest denial, because...
http://www.zdziarski.com/blog/...

there are actually back-doors specifically built into iOS devices -- back doors not used by any Apple software on the device, not usable by genius-bar or any user-benefitting scenario, but still that make it possible for "someone" to get at a lot of the personal data.

Quote: "Why do we need a packet-sniffer running on 600 million personal iOS devices?"

Quote: "com.apple.mobile_file_relay - exposes much personal data - very intentionally placed and intended to dump data from the device by request"

Quote: "Apple has worked hard to ensure that Apple can access data on behalf of law enforcement.

I think the reason "anything can be picked apart" is because Apple DO create backdoors for the benefit of government, but for PR purposes they want to appear to deny it.

about a month and a half ago
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Dealing With 'Advertising Pollution'

ljw1004 Re:When "free" isn't free (418 comments)

This runs into the problem of cluck-bait... Stupid zero-content fluff pieces but with headlines that entice you in (e.g. Upworthy, HuffingtonPost) but then you discover that they're stupid. If I had to pay even 1c before seeing the content (and discovering that I'd been duped) then I'd start to get angry, and start to refuse to pay for more sites. Even on legit sites like BBC News, by "internet attention span" is satisfied by about half way through the article, so something long enough to be a good preview is ling enough for me not to need to pay.

about a month and a half ago
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Google To Stop Describing Games With In-App Purchases As 'Free'

ljw1004 Re:Freemium vs DLC (139 comments)

I seem to recall reading something like 1% of customers generating 98% of the in-app purchases, as a general trend across the industry. Can't remember where I read it though.

about a month and a half ago

Submissions

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What's up with no-ip?

ljw1004 ljw1004 writes  |  about 2 months ago

ljw1004 (764174) writes "In April 2013, the OpenDNS blog reported that no-ip was the second most popular dynamic-DNS site for malicious software. No-IP responded that they have a very strict abuse "policy", and they want other people to help by reporting violations of the TOS to them. They also scan daily and filter by keyword. In February 2014, the Cisco blog reported that no-ip had risen to be the worst offender, and no-ip again responded that they have a strict abuse policy, and they want other people to report violations of the TOS to them, and they scan daily and filter by keyword. ... Were no-ip doing a good enough job at policing themselves?"
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Drug halts decline in Alzheimer's disease

ljw1004 ljw1004 writes  |  more than 6 years ago

ljw1004 (764174) writes "Alzheimer's disease: researchers are divided on whether it's caused by "beta amyloid" (a peptide found in alzheimer brains) or by "tau protein" (normally used for cellular scaffolding, but can aggregate of control and destroy neurons). Today in Chicago a new drug has been anounced which stops tau aggregation and appears to have halted alzheimer-related decline in 300 clinical trial patients. Do you have friends or family who appear to be dementing? Here is an online questionnaire, part of one used in the clinical trial to diagnose dementia. (disclosure: I made the online questionnaire, and my father is one of the scientists behind the drug.)"
Link to Original Source

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