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Comment Re:Hoax (Score 1) 986

Converting natural nickel to nickel 62 is a bit outside the magician's domain.

No, sleight of hand is well inside a magician's domain.
Rossi was present and operating the experiment both when the "fuel" was inserted and removed.

This is probably one of the oldest cons in the book. Alchemists "produced" gold from lead, and fooled princes and kings.

Comment Re:Hoax (Score 1) 986

As I understand it, it produces heat. Allegedly it produces more heat than can be accounted for by the electrical input.

But we don't know what the electrical input is. Rossi sets the stage, not the scientists who "verify" it. As long as Rossi provides all the outside equipment and power to run the show, there's no assurance that he doesn't somehow feed power from the outside.

Why won't he let others set up the tests and location, and he only providing the power generator? The answer seems pretty obvious, but then again, there's a venture capitalist born every minute...

Comment Re:Hoax (Score 1) 986

Either it makes economical sense or it doesn't. If the nickel costs more than the energy that can be produced from it, then there's no sense in any further pursuit of this "idea".

You're wrong here. If this were a viable method of creating energy, even if horribly expensive, it would have enormous scientific and economical ramifications.
It would be a viable energy source in situations where you need power without being able to use a nuclear power source, price be damned. A drone you don't have to refill for months? Space probes and landers that don't need solar panels or nuclear power plants? Emergency power sources for important servers?
There would be a ton of applications, not to say anything about rewriting science and opening up a lot of new doors.

But, unfortunately, it's looks lie the same old con in new and improved wrapping. The earlier demonstrations by Rossi were exposed as fake (like when the "fusion" produced apparently produced copper in the same ratio of isotopes as naturally occurring copper, and not what a fusion process would produce). So why should we think that this one isn't a scam, and that he's just adjusted the end product to better fit his model?

I wish we could check the money trail, and find out whether he has bought some very expensive copper and nickel isotopes that his reaction allegedly produce.
But I'm sure the believers would have an explanation for that too - any explanation except that they've been conned.

Comment Re:Hoax (Score 2) 986

The devices are fairly small, so it's easy to isolate them from any conceivable unknown energy input. Electricity input can easily be monitored. Output can easily be monitored. If you have done a careful job of isolation, and the output over time is more than the same amount of mass could produce chemically (i.e., even a super-powered chemical battery), then you have a nuclear reaction. It's that simple.

No, input cannot easily be monitored, unless someone trusted to be impartial can provide and set up the lines.
You can have two different power lines going to the device, with each of them in addition to the two normal wires also has a third. The hidden wire is [+] in one wire and [-] on the other. The meters you clamp on to each of the cables will show a low current, not detecting the real power source.
And Rossi needs multiple low-power cables, and won't let others provide the equipment.

It isn't as though Rossi had one bolted to a table and wouldn't let anyone under the table to look.

Well, yes, that's exactly what it's like. The chain of custody is compromised, in that he does not allow the test to be set up in a 3rd party controlled environment, and doesn't allow them to replace any of the outside equipment that isn't part of the "trade secret" core.

If this was legit, Andrea Rossi could seal a unit, and send it to independent testing along with instructions for how to test it. It would be reproducible, and he would still keep his trade secrets. But he has refused this.

Comment Re:For those who said "No need to panic" (Score 1) 421

I wasn't playing semantics games. i just immediately understood what the GP meant, unlike you.

(But he was also wrong - this is disregarding the two simultaneous cases we had last month in Atlanta. The score now is 4 confirmed cases, 3 of them imported cases, one death, which may rise to two. Plus the possible case in Boston, but at this point I think it's more likely to be a case of hysteria than Ebola.)

Comment Re:Hoax (Score 3, Interesting) 986

The size of the element alone precludes it having stored 1.5 megawatt-hours by chemical or other known means.

Why do you presume it was stored, and not provided through one of the various tubes connected to the device?

Further, they did analysis on the metal isotopes (maybe you missed that part). Start reading the PDF on page 27.

Why do you presume that the materials tested afterwards was the same as what was inserted?

This shouts "fraud" with capital F, R, A, U and D.
And that's before considering that Mr. Rossi has a history of fraud, and has spent several years in prison over previous frauds.

The device's main mode of operation is to extract money from gullible venture capitalists. The scientists are just useful tools here, not adept at spotting fraud, but used to work with people who may be wrong, not outright deceitful.

Comment Re:For those who said "No need to panic" (Score 2) 421

We had 0.
Then Mr Duncan arrived. We had 1.
Then Mr Duncan died. We had 0.
Then the nurse tested positive. We have 1.

We've never had more than one case. Unless the guy in Boston who went to renew his prescription and complained about muscle aches tuns out to test positive. In which case there are two cases.

In comparison, every year, between 3,000 (confirmed) and 49,000 (estimated) people in the US die from influenza.

Comment Re:Obvious for some, but... (Score 1) 144

I thought it was Advance Placement without a d. Because they are used to advance the student to be able to be placed in courses he or she doesn't have the formal prerequisites for - mostly entry level, and nothing advanced at all.

Of course, abbreviations can change their meaning over time (like RAID where the I initially stood for inexpensive, but now stands for independent, which they obviously aren't).

Comment Re:Obvious for some, but... (Score 1) 144

i thihk it stands for Advance Placement, which are (correct me if I'm wrong) voluntary classes a student can take in advance to build enough credits to be able to take other classes they don't qualify for, or to get fewer hours required in a future course.

It doesn't seem to me to be for those with a strong interest or skills.

Comment Re:clockspeed really? (Score 1) 338

Tom's Hardware (which back then still was run by Thomas Pabst), certainly called out Intel on it, and correctly deduced that the much longer pipeline was to blame. It became even worse with Prescott, the Windows Me of CPUs, because Intel did not want to admit that increasing the pipeline was a problem, so they did it again. It worked great for unrolled benchmarks with minimum branching, but not so much for real life code.

Finally Intel took to reason, and scrapped the horrible P4/PD Netburst design, and went back to look at the PIII design when starting over with Core 2. And almost overnight, Intel took back the throne from AMD.

Comment Re:Linked? (Score 1) 338

Also, the flip side of the same coin: excessive copying.
I've seen plenty of code where each thread works on its own copies of data and locks the global, possibly thinking that if the speed of a single thread is increased through register usage instead of memory, it will also hold true for the sum of all threads. This approach only works if it's highly unlikely that any other thread needs the same data - else it will be slower than accessing slow memory repeatedly.

And relying on other layers to handle mutexes, which usually means nothing will be freed to use by other threads until the next tick at best. If speed is important, make sure you handle your own freeing of shared resources, as soon as at all possible, even if it makes the source uglier or the best-case slower.

Comment Re:clockspeed really? (Score 2) 338

The pentium 4 was a lemon. A 1.4 GHz PIII-S outperformed the first P4s running at 2 GHz. The pipeline had grown so much that "normal" code spent a good amount of time refilling the pipeline.
With the Core CPUs, they went back to the shorter pipeline, and real world speeds per clock jumped.

But I think the real problem here is designed bottlenecks combined with 50,000 feet programming and abstractions where the squeezes are. I'm sure they use a profiler, but it can't unravel bad design or remove unnecessary data copying.

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