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Comment: Re:Today's computer science corriculum is practica (Score 1) 153 153

| We have hired, and let go, 3 "computer science" majors who didn't know how to calculate a range of IPs given a single IP and a netmask. Two of them didn't even know what the netmask DID!

Were they still incompetent after googling "What is IP netmask", and most importantly, be able to read and understand the results?

Comment: Re: Paywall (Score 1) 153 153


I found GUI programming with Angular & Javascript substantially more opaque, odd and unpredictable, than anything else I've worked on.

In reality, success in college and further degrees are 'g' (what psychologists call 'IQ' in the academic literature) filters. Software systems are complex and difficult and only some have the mental capacity to succeed well in them.

The study topics in computer science and other technical degrees at a significant school is generally difficult all-around in many cognitive areas similar to the tasks necessary in industry. Graduate school and academic scientific research is more intellectually difficult than industry programming.

Comment: Re:Renewable versus fossil - where is nuclear? (Score 0) 288 288

| On the other hand, $2bn in renewables will have a measurable effect.

But only incremental progress, not breakthrough, because you're profoundly limited by laws of thermodynamics & energy/entropy density.

There's no Moore's law for energy. Less is less, not more.

In the 1960's when microelectronic chips started, the state of the technology was many orders of magnitude away from the fundamental limits, i.e. the size of the atoms. There was tremendous unused headroom to grow into. {now those limits are starting to bite}.

In energy that wasn't the case and still isn't.

Comment: Re:you never hear of having USN nuclear problems (Score 1) 288 288

| It has never been possible for privately owned terrestrial nuclear power plants to make a profit. NOT EVER. This is an independently verifiable stone cold FACT

Sure, because it's competing against coal and gas which pass their externalities of wrecking the planetary ecosystem at zero cost to everybody else and their descendants.

If coal and gas had to sequester their output as much as nuclear, nuclear would obviously be cheapest because it's much easier to capture a small amount of solid waste instead of immense amounts of gas.

Comment: Re:Kids don't understand sparse arrays (Score 2) 128 128

I think the poster above clearly understood the problem domain, in that the most common uses for "sparse array" is a "sparse matrix" for numerical computations.

And moreover, as is the case, the problem domain of matrix computations is known to be deep and problem-dependent, with a wide variety of representations and solution categories.

| But by all means, go ahead and implement your own formats for each of the various types of sparse matrices you are likely to encounter. Then optimize operations for each. Then implement complex algebra (eigenvalues, svd, QR, the works). In the end, hope that your brand spanking new wheel has no corners and works for enough use cases to justify not employing a standardized wheel. A smarter person than me said something along the lines of premature optimization and evils, but I suppose it does not apply to your brand of genius.

I see an unjustified insult against the previous poster.

The various cases and solvers have already been implemented in many important software packages for different domains, and given the centrality of matrix operations in high performance computing, this is not a premature optimization but rather the essential, core implementation and algorithmic optimization flowing from the proper mathematical treatment of the problem.

And his point was not at all to re-do everything yourself, but to be aware that there are in fact many varieties of sparse matrices in various settings and that this is not just a software-abstraction problem but a key mathematical problem, and there is no simple over-arching software abstraction that works well universally. The post described well-established problem domains with high-quality solutions.

Simply being aware of this not-always obvious fact is an example of scientific maturity.

Comment: cost of lithium? (Score 2) 214 214

Where does cost of lithium end up $300 / lb, i.e. ~ $660 / kg ?

I'm seeing prices of bulk lithium carbonate at $6000 per metric ton, i.e. about $6 per kg.

Molecular weight of lithium carbonate is about 74, which has two lithiums in it at about 6.9 each, so total lithium is ~13.8 of the 74,
so cost of elemental lithium ignoring reduction costs is ~ $32 per kg.

Where do you get anything near $300 / lb?

Comment: Re:He chose to not exercise his 5th amendment righ (Score 1) 510 510

| It may be that the statute of limitation on the original crime has expired and these follow on crimes are what is still possible to prosecute. Obviously I don't know what the prosecutors are planning but I'm pretty sure there is a good reason. I doubt they would be worrying about these lesser charges if statutory rape were a charge they could use.

That would be a state crime, not a federal crime. The state would have to prosecute him for that one unless there was some kidnapping/sex trafficking crime involved.

The problem with that is the supposed victim would have to testify, and then be open to charges of blackmail himself.

If Hastert's lobbying career is over, he may find it worthwhile to sue the blackmailer to get his money back.

Comment: Re:Good talk about this at popehat (Score 1) 510 510

| He could have just made one large wire transfer, documented it, paid the gift taxes, and had the whole thing be over.

The problem with that is that when the blackmailer decides it isn't over. Hence, need for ongoing payments to motivate both sides.

I'm pretty sure that blackmail is a Federal offense as well, and hence wanted cash.

https://www.law.cornell.edu/uscode/text/18/873

Comment: Re:sampling bias (Score 2) 405 405

| One of the reasons politicians took the Tea Party members seriously is because

their attitudes were useful to advance the desires of the exceptionally wealthy and powerful who sponsor politiicans

But you think it's really the haircut? If they just cleaned up a bit then substantial efforts to restrain the privileges of the powerful would materialize?

Comment: Re:Does This Make Sense? (Score 4, Informative) 318 318

| Please someone who understands the 2nd Law of Thermodynamics better than I, tell me how I am wrong.

Centralized generators run more efficient thermodynamic cycles than internal combustion engines which need to emit a widely varying power output over short time periods.

Centralized generators often run on hydroelectric and natural gas, which produce less emissions than coal or petroleum, and a few are solar, nuclear and wind-powered which have no emissions.

The end-to-end comparisons have been done with quantitative accuracy and show advantages to electric vehicles in many situations. You are hardly the first person to think of this consideration.

Comment: It has little to do with bitcoin. (Score 1) 253 253

The Argentinian government, being a master of sense and competency, pre-emptively taxes white-market transactions on the normal banking system. They have power to enforce this on the credit card acquirers & merchant processors, and do it especially with foreign currency transactions.

Presumably there is some way to get 'refunded' some of the taxes back if you can prove to some idiot's satisfaction that you earned the money in a 'legal way' whatever that may mean.

So, doing it with bitcoin is basically a payment processor operating illegally and not collecting withholded taxes. It doesn't have much to do with bitcoin and everything about evading regulation.

Comment: Re:Catholicism + Climate Change = Totally Appropri (Score 1) 703 703

| Please tell us exactly which one of those has said mystical "ring" of deliberate lies, and why.

| 2) The data for anthropogenic warming is weak. TRUE

This one. It's a deliberate lie.

There has been a very large increase in greenhouse gases in the industrial period. It is from fossil fuel mining and burning. This has caused changes infrared emissivity in the atmosphere---this is a measured fact, that the atmosphere is shining more in infrared. It is physically impossible for the climate not to warm.

Extensive data, geological and biological, show this is what has happened.

All other plausible non-anthropogenic mechanisms have been investigated and do not explain the observed data. Every aspect has been investigated every which way for decades.

| 3) Those who disagree with it are ex-communicated from the scientific community. TRUE

At some point, which is about now, they don't have good arguments or data. When they try, their arguments are quickly refuted. It now appears that they are willfully incompetent and motivated by achieving a non-result instead of actual scientific inquiry.

Particle physicists who disagree with conservation of relativistic momentum are similarly "ex-communicated" as they have nothing productive to add.

Comment: Re:The Earth has been warming since the Ice Age en (Score 1) 703 703


Exactly! And just as predicted by those pesky laws of physics, the climate was, until modern period, slowly cooling from about 6000 BC to now as the Milankovitch cycle of orbital forcing proceeds on its predicted path. It takes a Milankovitch peak to get out of the Ice Age.

Until humans started releasing greenhouse gases in mass, and that is now causing much more rapid warming.

http://www.ncdc.noaa.gov/paleo/globalwarming/holocene.html

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