HN user
First, the number of well-paid middle-skill jobs in manufacturing and clerical occupations has decreased substantially since the mid-1980s.
in all these articles/analysis replace the middle-skill jobs in manufacturing with the programming/IT jobs - the middle-skill jobs of today - and you'd hardly find any decline
wrt. 422MJ->3MJ, xenon flash lamp pumping
As it was already mentioned in the threads like this before, the NIF was built using the technology that was available in those years of the past when NIF was planned and started. Flash lamp pumped lasers are bigger, more expensive and much less efficient, i.e. mere few percents efficiency at best vs. tens of percent efficiency of modern laser diode pumped IR lasers. (Even with such improvement though, i still think laser driven fusion is inferior to many other forms of inertial confinement and much less probable to result in system-level break-even. My personal favorite, Sandia Z-machine is on the scale of 15% efficiency of generating X-ray pulse, and schemes like deep plasma focus or polywell by-pass the energy to radiation conversion stage all together and thus avoid related losses.)
It may in fact not be possible to do better-than-breakeven fusion on a small (relative to a star) scale.
the H-bomb is better-than-breakeven and much smaller than star scale. What you say may be true for Tokamak like confinement schemes whereis H-bomb is inertial confinement, and it works. And it is pretty clear that inertial confinement in several orders of magnitude smaller scale than H-bomb would work too. Look at Sandia Z-machine - an order of magnitude up, and it would get breakeven. Not that anybody really needs it :)
Companies spend millions in SuperBowl ads, and nobody can click on that,
not that i dream about clicking it, i'm just surprised that they still hasn't implemented it yet as current TVs are really computers sold/packaged as TVs.
but realize how long it takes for humans to learn to speak/comprehend complete sentences.. heck to be potty trained even.
interesting that a kitten or a puppy gets potty trained much faster than a human child.
Surely that doesn't mean it's correspondingly illegal to trade RUB for USD within russia, but i'm not sure what the salient difference is
If i remember correctly the other party must be a bank.
the risk isn't the same. Instead of capital gain a capital loss may happen - for example when you own stock, like, in particular, after exercise. Whereis in case of stock options there is no risk of loss before exercise. The stock options may be worth 0 - that is the lowest possible outcome, and you wouldn't be charged a dime if the options are underwater. Just like bonus - company pays to you when things are great, yet you don't pay to company when the things aren't. Thus the same ordinary income tax treatment for stock options exercise profit as for bonus.
there are differences. For example, the profit from the grant date to the date of exercise is ordinary income - taxed at your bracket rate, while any profit coming from holding for longer than 1 year after exercise is at long-term capital gain - 15%.
I'm surprised the company (not the insurance) had to pay that much for the babies medical bills.
my understanding that AOL self-insures for medical.
the difference is that Eric Holder hasn't yet made a determination that Bitcoin is a currency and thus violates the law (like they did to Liberty Dollar, etc...)
" В соответствии со ст. 27 Федерального закона «О Центральном банке Российской Федерации» «официальной денежной единицей (валютой) Российской Федерации является рубль. Введение на территории России других денежных единиц и выпуск денежных суррогатов запрещается». Получившие определенное распространение анонимные платежные системы и криптовалюты, в том числе наиболее известная из них – Биткойн, являются денежными суррогатами и не могут быть использованы гражданами и юридическими лицами. "
translation:
"According to the title 27 of the Federal Law "On Central Bank of Russian Federation" "the official currency of Russian Federation is rouble. Issue (introduction) of other currencies and currency surrogates on the territory of Russia is prohibited". Anonymous payment systems and cryptocurrencies, including the most popular - Bitcoin, are currency surrogates and can't be used by physical persons and corporations. "
This determination - bitcoin as a currency surrogate - was made by the "expert group" consisting of high level bureaucrats from the enforcement side, ie. Central Bank, FSB, police (police in Russia is one big vertically integrated structure from local to federal level), Attorney General office.
sounds like she was punished for a disruptive innovation - "backdating of stock options exercise". Backdating of grant is cheating at the expense of shareholders whereis backdating of exercise - at the expense of IRS :)
"In my reference checking, at least a dozen investors told me that they made far more money when the numbers disappointed than when the company outperformed, because they trusted Michelle when she said that things were not worse than they appeared and bought on the dips."
anybody sees any wrong here? Beside private hush-hush, there seems to be the same pattern - like with backdating of options - of optimizing interests of some selected "closer than arm reach" group at the expense of general shareholder population of that company.
know places where even poison taking follows strict process.
If, on the other hand, he were connected to your "corporate peon" role, you could switch him on and off at the... drop of a hat. In fact, he could give you that hat when you get hired, already connected to everyone else in your office. And if you leave that job, you both burn that hat, and he gives one just like it to the next guy.
sounds like good old corporate email/network/IM account.
in the movie "Aviator" there is a scene where PanAm almost successfully gets monopoly on international flights. Watching it i could feel only "WTF?". The same way we'd be feeling couple decades later about monopolies that weak [in particular to the influence of industry] governments at all levels have been granting to telcos.
I'm not even sure domain knowledge is important for a CEO of a company that size: once you become a $50 billion plus company, you don't have time to get involved with the details of the business.
Steve Jobs and CEOs in-between kind of make a counter-example.
30 years ago remember USSR used underground nukes at least once specifically for exploration of oil/gas in Siberia.
when in US the ITAR still applies AFAIK - getting any access to or knowledge transfer from ITAR project to non-US person, etc... Looks like starting from 1K plegde - invitation to test fire the engine - may run afoul of it.
is it subject to ITAR?
Sounds like Khosla aren't going to invest in flying cars :)
several years ago spent a bunch of time going through the wheel, and in my view XV-5A and Bell X-22 were pretty good planes - there was nothing really wrong with them, and definitely not a "shame". Given the half-century improvements in hardware/electronics/aeronautical science i think if built today they would be much better than F-35 and V-22.
Escape to where? You can't escape from the universe as a whole. The concept of "escape speed" has no meaning for the universe as a whole.
take a 1B light years radius ball, populate it with density of our Milky Way - that ball will have 1B Schwarzschild radius. Calculation of gravitational potential (escape speed) from it to the rest of the Universe makes sense, doesn't it?. And due to this gravitational potential it will be bona fide black hole from the point of view of the rest of the Universe.
No, it wouldn't. A black hole is a stationary spacetime. The spacetime of the universe is not stationary. The spacetime model that describes the universe is very different from the spacetime model that describes a black hole
exactly. There is no stationary spacetime in our Universe. Black hole is pretty artificial model where pure mathematical artifacts of singularity at the horizon is taken for the real thing.
the fact that you can plug the mass of the observable universe into the Schwarzschild radius formula and get a number out does not mean that number has any physical meaning for the universe.
Taking a big chunk of space and calculating escape speed from its gravitational field - how is that not a physical meaning? At what specific size of the chunk you think it becomes not meaningful?
the event horizon - Schwarzschild radius - is defined by the specific value of gravitational potential (escape speed equals speed of light) while, given the black hole mass large enough, the gravitational force at the Schwarzschild radius can be as small as we'd like it to be. The various local effects like time dilation, light path curving, etc... are defined by the value of gravitation force, not gravitational potential. The potential defines the fact that anything originating at or below the horizon would never escape completely the gravitational field, i.e. never reach the infinity.
The Schwarzschild radius of the mass of the observable Universe is 10B light years. So, several billions years ago, when observable Universe had 10B radius, it would be a black hole (though i think that in less expanded space of the earlier Universe the constants like "c" had different values and thus that Schwarzschild radius was less). We can imagine it in another way - increase 125 times (the observable Universe has 40+B light years radius) the amount of matter, ie. galaxies, stars, etc... inside the 10B radius ball around us, and you'd get the black hole with 10B light years Schwarzschild radius (and i don't think we would ever notice the change - only with time the galaxies's movement will be affected). Obviously, the gravitational field on the surface of that imaginary 10B radius sphere and inside it would increase somewhat (like 125 times on the surface, 125 times 0 pretty much 0) - not even close though to any values to affect space curvature or to prevent anything from crossing it from inside. Of course, anything that would cross it from inside would return back eventually.
not sure what connection to Bitcoin here. The guy behaved like, for example, the mayor of San Diego (that mayor). Different age, different business ... Would it warrant "This is What it's Like to Be a Woman in a city administration"?
The event horizon is the "point of no return" beyond which gravity is inescapable.
the event horizon is frequently treated as "uncrossable" from inside to outside which is really different from "inescapable". The later means that whatever speed you have on or below the event horizon, you can't reach infinity. The former is just an impression by an outside observer because in his observation the time has stopped on the event horizon, while a stone thrown up from below the event horizon would cross the event horizon just fine on the way up and on the way down and would return back down successfully in its proper time (the point of "inescapability" is that the stone would always return). While above the horizon, the stone can interact with other stuff there and result of this interaction can be observed outside (doesn't mean on practice by us today or tomorrow :).
Many models seems to treat the event horizon as "uncrossable". For example quantum information disappearance - matter goes in, evaporates as Hawking. Yet, just for example, when Hawking radiation decreases the mass of the black hole it causes the shrink of the event horizon and thus whatever "stones"/photons on their way up were stuck (for external observer) in the stopped time of the horizon become free - doesn't mean though that we can observe them on practice as getting out of that gravitational well does take time (again in our time) and redshifts them into oblivion. Like proverbial "the check is in the mail". It is the reason why we can't really observe Hawking radiation until we develop technology to observe light with extremely long wavelength and i just don't have the numbers right now on whether 13B years is enough for the radiation originating right above the event horizon to get out of that well and reach the interstellar space.
looking back into history i'm wondering why F-35 VTOL didn't follow XV-5A, i.e. placing fans in the wings
http://www.youtube.com/watch?v=1XkJXSoTTb4
50 years ago plane looks more capable as VTOL than F-35. Modern powerful engines allow to drive the fans from the compressor shaft - as F-35 shows - and that would fix the main geometry issue with jet engine placement in XV-5A where fans were driven from jet exhaust.
we can have serious hearing in Senate on BTC with outcome rules [almost] killing or seriously affecting it. Having a hearing and SEC/FBI enforcement on Doge? With Doge as a witness. Put you paw on the Bible and repeat after me ...
as far as i heard, Immigration, before issuing the marriage-based Green Card, may grill very seriously (various pretty intimate details, etc...) trying to determine whether the marriage is real. Don't think that IRS would do less when it comes to (multi)millions.
For example: http://marriage-and-immigrationlaw.blogspot.com/2007/09/must...