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Power

Solar Impulse Airplane To Launch First Sun-Powered Flight Across America 89

First time accepted submitter markboyer writes "The Solar Impulse just landed at Moffett Field in Mountain View, California to announce a journey that will take it from San Francisco to New York without using a single drop of fuel. The 'Across America' tour will kick off this May when founders Bertrand Piccard and André Borschberg take off from San Francisco. From there the plane will visit four cities across the states before landing in New York."
Power

Laser Fusion's Brightest Hope 115

First time accepted submitter szotz writes "The National Ignition Facility has one foot in national defense and another in the future of commercial energy generation. That makes understanding the basic justification for the facility, which boasts the world's most powerful laser system, more than a little tricky. This article in IEEE Spectrum looks at NIF's recent missed deadline, what scientists think it will take for the facility to live up to its middle name, and all of the controversy and uncertainty that comes from a project that aspires to jumpstart commercial fusion energy but that also does a lot of classified work. NIF's national defense work is often glossed over in the press. This article pulls in some more detail and, in some cases, some very serious criticism. Physicist Richard Garwin, one of the designers of the hydrogen bomb, doesn't mince words. When it comes to nuclear weapons, he says in the article, '[NIF] has no relevance at all to primaries. It doesn't do a good job of mimicking secondaries...it validates the codes in regions that are not relevant to nuclear weapons.'"

Comment But what kind of gamer? (Score 1) 1006

The New York Daily News' Mike Lupica reported last week that investigators of the Newtown case found a huge spreadsheet in the Lanza home where 20-year old Adam Lanza had methodically charted hundreds of past gun massacres, including the number of people killed and the make and model of weapons used. A Connecticut policeman told Lupica 'it sounded like a doctoral thesis, that was the quality of the research', and added, '[Mass killers such as Lanza] don't believe this was just a spreadsheet. They believe it was a score sheet. This was the work of a video gamer'.

Come on, a gamer wouldn't do that kind of research unless they were playing MMOs, or *maybe* a hardcore RPG. If he played shooters he would have just accused the other killers of hacking and tried to build an aimbot in retaliation.

(I am a bad person.)

Comment Not quite OS-less, but still sounds neat (Score 4, Interesting) 201

The broken link should probably point here.

If I read the article right, they're using a hypervisor (Xen) to directly run an Erlang interpreter (LING VM) that they wrote. The interpreter relies on Xen to provide some higher-level functionality. (Wikipedia says this is called paravirtualization.) So it's not quite a web server running on bare (virtual) metal, cool as that would be.

It looks like the significance of this is twofold. First, people are using VMs to create run-time environments that are less featureful than a standard OS but much faster to start up. Second, there's a working demo of a simple virtualized web server using this concept. I don't really follow virtualization tech, so maybe someone can clarify this? I'm not clear on exactly what the difference is between a hypervisor+para-API and a normal OS.

Comment Re:Observation about Slashdot (Score 4, Informative) 298

For some reason I decided to hunt through the Slashcode repository to see how moderation works, and I think you're right. To be on the list of eligible users, you have to have a certain minimum karma and a UID that's older than a certain limit. The list is then processed to select "good" moderators based on metamoderation and whether they actually use all their mod points. The good moderators are more likely to receive tokens, which eventually become mod points. I'm not clear on whether anything else can give tokens, since there are a lot of files and I'm manually reading through the repository. But it looks like you can get more mod points just by moderating fairly, which I guess was the whole point of metamod in the first place.

I didn't do anything like a full survey of the code base, so obviously take this with a grain of salt.

Comment Re:Observation about Slashdot (Score 2) 298

I'm not sure it's bias that's the root problem. There are many more other factors to consider:

1. Slashdot was born in a time when computer geeks were frequently abused and ostracized as teenagers. One of our defense mechanisms for this was to decide (often with adult encouragement) that we were smarter and better than everyone else.
2. Intelligent people with technical training (i.e. geeks) can easily come up with a plausible-sounding explanation for just about anything. You'll sometimes hear this called Engineer's Syndrome.
3. Moderation is focused on modding up entertaining writing and modding down flagrant spam. There's no separate mod option for rating actual subject matter expertise.
4. Getting modded +5 is rewarding (for your ego, at least). There's no reward for not commenting.
5. You have to be an active commenter to get mod points.

The upshot of all this is that users are motivated to comment regardless of what they add to the discussion. We underestimate how much we don't know, and thus overrate the comments of people like us. There's very little incentive for humility here.

(All this is based on my observations from reading and commenting in the past ~15 years. Am I a psychologist? No. Have I done any kind of rigorous study of this? No. Am I doing the thing I complained about in #2 above? Quite possibly! See how easy it is to fall into this trap? ;-) )

Comment Re:Not a good time (Score 1) 526

Judging by our limited conversation, I suspect I have significantly more technical and historical knowledge in this area than you do but that's just my observation.

Then show it. Your entire string of posts has been an appeal to emotion and argument by assertion; "debt is bad" and "think of the children!" repeated as nauseum without any reference to mechanisms, causes, consequences, or any solution beyond hopelessly vague "fiscal discipline". You insist on using absolute numbers instead of percentages purely so you can use scary adjectives, in the process showing no understanding of exponential growth. You show no comprehension of the fact that the deficit has been declining for years, or that the biggest budget-related issue in the news is (too) massive spending cuts due to the sequester. You show no interest in taxation or other policies that affect the federal budget. In fact, you seem unclear that taxes, deficits, and the debt are closely related, and that it doesn't make sense to talk about one without involving the other two.

In response to what I've said and the links I've provided (that stuff took time, by the way), you've barely even touched on anything I've said to you. You've also repeatedly accused me of a lackadaisical and child-damning apathy when I have already given specific changes I support to lower the debt. I take offense at that.

On top of all that stuff, you have the nerve to complain that you have "no dog in [the global warming] fight". So much for our children and grandchildren! (Plus an order of magnitude more!) And of course *that's* all "problems estimated" and "severity unknown".

Finally, you still haven't said how much your taxes went up. I think you're trolling. Or maaaaybe a college Libertarian. But more likely trolling. Well done! You got me.

Comment Re:Not a good time (Score 1) 526

One more thing -- regarding your ideas about children being responsible for the debt and me getting off the hook...

I am 30 years old. I expect to be paying taxes for several decades yet. I expect to do my part to pay off the debt (or as much as we need to; I doubt we'll need to take it down to zero). I am not "saddling" anyone with anything. I am committing myself at my financial peak to help pay for this, and I have no hesitation about doing so. The United States has paid off large debts several times in the past, and we will do so again.

You have been talking like debt has some intrinsic moral value. Perhaps this is an "agree to disagree" thing as well. You do not seem interested in technical or historical arguments. I hope the future brings you peace.

Comment Re:Not a good time (Score 1) 526

Er... there's a big difference between saying that no debt would be better than having a large debt and going off on extended rants to the tune of:

We're totally screwed as a country and our children are doomed... No one in government cares and no one outside of government has any power to change it... The government is out of control and all that's going to happen is more and more and more taxes... Our children are doomed -- but that's perfectly OK with you... One disaster and you're in trouble... fraud to fool people who look at the insanity of government spending and see how insane it all is... it obviously and clearly is insane... It is downright criminally insane. And we are committing this crime against our children... you're either thoroughly deluded or you're one of those trying to delude others to ignore the elephant in the room... The unprecedented, massive, criminal national debt of the U.S. is really, really bad... As with any addict, the first step is to recognize that we have a serious problem... It appears our actual disagreement is that you seem to think that saddling our children, and their children, with this massive debt is "Ho hum, no big deal". I think it is really unconscionable and you just don't care...

My actual disagreement is over that stuff. I don't think that stuff is true. I don't think your predictions of doom will come true. I don't think that my grandchildren (or children, for that matter) will actually be saddled with an enormous, crushing debt that will lead to an apocalyptic future. I think paying off the debt is not that difficult and will not take all that long if we do it right. I think we will probably do it right once the current Republican Party no longer controls Congress. I think that will happen by the time the recession ends.

Maybe what you want is for me to be more angry? Okay then...

GRR! Debt BAD! More debt MORE BAD! Debt make children SAD! Sad children make HULK ANGRY! HULK HATE BIG NUMBERS! HULK NO CARE ABOUT TECHNICAL ASPECTS OF GOVERNMENT FINANCING! HULK SMASH DEBT NOW! SMAAAASH!

Nah, on second thought agreeing to disagree was a better idea.

Comment Re:Not a good time (Score 1) 526

I'm sorry you're so confused. Debt is simply not good economics. Or does that "data not matter"?

Mortgages? Car loans? College loans? Lines of credit for businesses with irregular revenue streams? Do you understand how much of our modern economy requires debt to function? Debt is just a tool. It's not magical evil.

Best: No debt plus ample reserves in case of emergencies. Like Apple. That's healthy. Following so far?

For you and me (and Apple), whose income can be uncertain, sure. But do you really want the government to hoard cash? That's over-taxing.

Not so good: No debt but also no reserves. One disaster and you're in trouble.

For you and me, yes. For the U.S. government, no, because it can *borrow money by offering its debt as a safe and stable investment*. A negative sign on the balance sheet does not affect a stable government the way it does an (unstable) private individual or company. There's nothing magical about crossing the zero. You could do it too, if a bank trusted you enough (i.e. offered a low enough price for your debt). Private companies do it as well, although not as much.

Bad: Debt with no appreciable reserves or income to pay it off right away.

Debt is bad because of interest payments and because if you have enough of it people won't loan you more money. Neither of those is currently an existential threat. The latter is not currently a threat at all. Also, the government does have income to pay off the debt. It's called "taxes". Which for some reason you keep trying to ignore.

Whether it's "macroeconomics" or family economics, that's simply the way it is. You'd like to pretend that "macroeconomics" doesn't adhere to the same principles as company economics, like Apple or even family economics, but the principles are the same.

The basic principles, maybe, but the practice certainly isn't. The U.S. government is an immortal organization. It has a self-controlled revenue stream that is ~25% of our GDP and a ~225-year track record of stability and not defaulting on debts. You are nobody. You are tiny. You have a limited lifespan. Your revenue stream is dependent on what kind of job you can get, if any. Your debt is a similar kind of product, but it's certainly not identical, and investors do not treat it the same way. Your spending alone cannot alter the state of the economy. Comparing yourself to the government is like comparing your gravity to the moon's. The moon squishes the entire planet and causes tides. You do nothing.

Here is a list of debt vs. GDP for every country in the world. Only a handful have no debt, and few of those are nice places to live.

Actually, our debt is long past the insane level. It is downright criminally insane.

The people who are buying the debt (and thus taking on the risk) don't seem to think so. I'll say this again -- in the last year or two people have been *paying the government money to hold its debt*. Have you ever been offered a negative interest rate? No? That's because bankers think you are *less reliable than the government*. Debt doesn't materialize out of thin air. You sell it to people -- a bond market. That bond market decides what is too much debt, and they bet their own money on it. What makes you think you're smarter than them?

P.S. Remember, there's still proportionally less debt than there was during WW2. Using words like "insane" and "unprecedented" is misleading.

This whole "you don't understand macroeconomics" is a fraud to fool people who look at the insanity of government spending and see how insane it all is. "It isn't insane, it's 'macroeconomics'!" LOL! No, it obviously and clearly is insane.

The universe is not obligated to behave in ways that you understand or like, or in ways that always match your personal experience. There are many subjects that feature complex and counter-intuitive behavior. Do you also have this reaction to plate tectonics, the germ theory of disease, evolution by natural selection, quantum mechanics, relativity, etc?

What floors me is that no one is even talking about reducing the debt. They blah, blah, blah about "reducing the deficit" but "deficit" means going more into debt.

In the short run, yes. The reason for a gradual change is that sudden massive spending cuts would both kill our already slow economic recovery and plunge millions of people into deeper poverty. That would be far worse than having some extra debt.

FYI, the politicians who are screaming the loudest about deficits are really just using them as an excuse to cut popular social programs. Their deficit-reduction plans are terrible at actually reducing the deficit. So don't take them too seriously.

The unprecedented, massive, criminal national debt of the U.S. is really, really bad. Time to stop ignoring these basic facts. As with any addict, the first step is to recognize that we have a serious problem. Congress, and people like you, need to take that step.

I already have. I would like to return tax rates to what they were in the late 1990s after the recession ends. I also support reduced defense spending and higher capital gains/estate taxes. I vote accordingly.

Just to clarify, I do agree that having no debt would be better than having a large debt. What I'm arguing here is that our government having a large debt is not the existential threat you're making it out to be.

Comment Re:Not a good time (Score 1) 526

Too many people either agree with you that "everything is OK, go back to sleep" or they just don't care.

Whoa, who said anything about going back to sleep? There are lots of real problems to deal with -- income inequality, the fallout from the Citizens United decision, global warming, drone wars, and a hundred others besides. If you want to focus on the deficit now, start campaigning against the Republicans who have gridlocked Congress and are preventing any reasonable solutions from being implemented. Hopefully they'll collapse on their own before too long, but you seem like the proactive sort, so maybe you should start working on that now.

I see the truth and I know how very, very bad our debt situation is -- and I don't need a lot of justifications and "counter-intuitive" stuff to justify my knowledge.

So your argument is that data doesn't matter? That macroeconomics can't be any more complex than "big numbers are scary, therefore I'm right"? This is either amazingly arrogant or trolling. If you're trolling, congrats! You got me. If you're sincere, then I hope the failure of our society to collapse becomes clear sooner rather than later so you can stop feeling so bad.

Comment Re:Not a good time (Score 3, Informative) 526

Are you saying that a 17 trillion dollar debt is perfectly fine?

It's not great, but it's not The End Of The World As We Know It. There are always spikes in the debt during major wars and economic crises. We had a higher debt-GDP ratio in World War 2 than we do now.

Are you saying that it's great that the the rate of increase is increasing?

First off, it's not. See Fig. 1-1: The deficit has been declining for the last few years. And while it is currently worse than anything since WW2, if you look at the 1980s you'll see that it's not *that* much worse.

Secondly, the reason for the current high deficits is high unemployment (fewer people paying taxes). In the short term (~5 years), we need more spending to make up the demand shortfall. Ideally that would have happened in 2009 with a ~$2T stimulus, but unfortunately we didn't get that. In the medium to long term, the deficit is dominated by Medicare and Medicaid costs. The Affordable Care Act will do a lot to lower those. Single-payer could probably do more, but unfortunately we didn't get that either.

Are you saying that the debt we are passing onto our children is of absolutely no concern?

It doesn't have to be, if we actually pay it off. Remember, we were running surpluses 15 years ago, and that didn't require massive budget cuts and the end of every safety net. The economy grows exponentially (for now, at least). Inflation is also exponential. The debt is an absolute dollar number, and does not grow on its own. (Bond rates have been dipping into the negative -- people are paying us to loan us money.) A moderate tax increase adds up (just as the Bush tax cuts have). And since taxes are super-duper-low right now, raising them (after the recession is over) is the easiest and least painful fix.

Why do you bring up what was happening in 1953 when the national debt was 275 billion dollars?

Which was 60% of GDP at the time. Absolute numbers are misleading. The U.S. has a staggeringly huge economy, so any number that's proportional to it will also be staggeringly huge. Sixty years of exponential growth adds up, so now we talk in trillions instead of billions. For comparison, the median household income at the time was under $5000.

You brought up a whole lot of extraneous and immaterial "facts" to argue with me. Nothing you said contradicted what I said. The government is out of control and all that's going to happen is more and more and more taxes.

The point of my response was that this is not, in fact, what is happening. It would take quite a lot of tax increases to get back to what has been normal for the last 60 years, and such tax increases would eliminate the deficit outright. Your statements about the government being "out of control" are vague by necessity, because you don't have trillions of dollars of actual "waste, pork, duplication, mismanagement, corruption, and stupidity" to point to. The spending that gets attention (like the stimulus and healthcare reform) are deficit-*reducing* measures.

(I'm still curious how you managed to get a huge tax increase, by the way.)

Our children are doomed -- but that's perfectly OK with you, just look at 1953 and ignore what's going on right now.

The only thing currently dooming "our children" is global warming. The debt probably isn't even in the top 10. This is good news. You should be happy about it.

To make my point perfectly clear: The problem isn't "taxes", the problem is DEBT. It's currently $53,112.68 for every man woman and child in the U.S. and it's going to get a lot worse.

If you want to see a spending cut-based approach to deficit reduction in a recession, look at Europe. Maybe start with the UK, which is heading into a triple-dip recession and still can't run a surplus.

I know a lot of this stuff is counter-intuitive, that's just how life is sometimes.

Comment Re:Not a good time (Score 1) 526

I made less money in 2012 than 2011 but my tax bill went way up.

How much is "way up"? Are you just getting a W-2, or is this some weird capital gains thing, or what?

Seriously, "Government waste" has become axiomatic, rampant and inevitable, and their only solution to our massive debt is "raise taxes"?

You know tax rates are actually pretty low now, right? Here's a link with inflation-adjusted numbers. Compare 2013 to 2003 -- slight tax cut. Compare 2013 to 2003 -- the thresholds are almost exactly the same, except we now have the 39.6% bracket again at >$400k. 1993 has really progressive brackets -- for married filing jointly, the 28% threshold is ~$58k vs. ~$143k today. In 1983 you'd hit the 40% bracket at around $105k, a quarter of what it is today, plus the highest bracket is 50%!

Don't even look at 1953. Your head might explode, and I don't want to be responsible for that.

I do vote but the only choices likely to be elected are those thoroughly venal politicians who will continue the irresponsible spending.

So you're outvoted by people who like government services and social safety nets? Might want to consider moving, then.

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