skysight-inc/HackerNews huggingface dataset:
To be clear, theory is being used here in the scientific sense, not in the colloquial sense of being a hypothesis. The science behind solar sails has been solid since Einstein's earlier discoveries (e.g. what he earned his first Nobel Prize for), when he discovered that light, despite having no mass, nevertheless does have momentum thanks to relativity. From there it's a straight shot towards realizing that you can make something move in space when it's hit by something carrying by momentum, exactly the same as a sail on Earth when it's hit by air particles carrying momentum. Basically it just became a problem of engineering at that point.

Some important limitations to keep in mind with solar sails are that the momentum imparted on them tails off according to an inverse square law, and also that since they have no medium like water to push against (hence no rudder), you can't "tack into the wind" like a sailboat can. However, and this is a very important point, because of the way orbital mechanics works out, and assuming you can adjust your orientation of the sail on the fly, this matters less than you might think, e.g. imagine orienting your sail at apoapsis so that you create a net thrust in the retrograde direction, then you furl or orientate your sail edge-on to the Sun. You end up with an orbit that has a periapsis closer to the Sun (with an apoapsis further out), so you're still traveling inward in some sense, at least for part of your orbit.
From the article: "SpaceX would need permission from countries to operate the service, a process that could be difficult, if not impossible."

Yep. To operate in many countries an ISP has to block access to a lot of content. It differs greatly from country-to-country. Would they really get involved in that? That would mean taking orders from governments all over the world and implementing blocks per those orders. Or would they forget about providing access in those countries? That's a large number of countries.

Added: Forgot to mention one of the biggest obstacles to getting permission in many countries: surveillance. Beaming directly from a user to a satellite that relays to a ground station in another country is going to bypass local surveillance.

Another addition: Wikipedia article on internet censorship and surveillance http://en.wikipedia.org/wiki/Internet_censorship_and_surveil... Note some of the countries listed under "Pervasive censorship or surveillance": India, South Korea, UK and USA.
Agreed, the Sun is a massive power we also still don't fully understand, is mostly safe and has all the energy humans will ever need (IMO); we just need to strive at understanding it and how to harness it better.
Poor State of App Monetization for “Made in India” Apps
They're going to run out of room for tanks. And there must be access, because the tanks are going to rust out, and will need replaced. So storing the Tritium-contaminated water for a century or so is nontrivial.
Tesla Motors, Inc. 2015 Annual Shareholder Meeting
Tritium is actually useful for luminescent devices like emergency exit signs.

Which now that I think about it, is a little ironic.
Wow, didn't expect my repo to make it this far. It was my first time using Reddit, with the aim of introducing this for research more than actual trading.

Just some thoughts after reading comments:

- I've got a number of Python examples for trading futures, but a third-party app is required as 'the gateway'. Browse on GitHub if you wish: https://github.com/hftstrat/The-Gateway-code-samples

- Backtesting is a topic not to be taken lightly. There are far too many issues to address than just historical simulation. I've written a book covering this topic.

- In my book I've also covered the use of Oanda API with a simple trend-following strategy. Available on Amazon: http://www.amazon.com/Mastering-Python-Finance-James-Weiming...

- Table of contents and source codes used in my book are also available on GitHub: https://github.com/jamesmawm/Mastering-Python-for-Finance-so...

Alright, I'm done with shameless promotion of my links ;p
I hope it can boost competition. My only concern is latency.
What browser/platform are you using?
Are there any bacteria that consume tritium? A quick google search of "tritium bacteria" shows some relationship between bacteria and tritium - in some cases it kills bacteria and in others, there are bacteria that can consume it.

For example:
"Possible use of A̲l̲c̲a̲l̲i̲g̲e̲n̲e̲s̲ p̲a̲r̲a̲d̲o̲x̲u̲s̲ as a biological monitor"
Presumably the one big satellite was intended to be backhaul for the solar planes. They can probably buy that backhaul from someone else with less risk and effort.
Normal ocean water has potassium and rubidium radionuclides that run to 11Bq/L.

At the higher level of 5MBq/L, they would need to dilute it into 3000km^3 of seawater in order to reach double background radiation levels, or a patch of the 6km deep Pacific abyssal plain that is 22km x 22km.
Wait how else do you give windows focus?

You mean like with the keyboard? Like SHIFT+TAB? That's on OS X.
Tritiated water isn't poisonous, and mixes with water (Because it is water). The environmental effects really aren't comparable.
Some ventures require contradictory value systems, eg writer and editor, engineer and marketer - anywhere there's conflict between parts of government, corporation, orchestra, etc. Even though some people can switch between value system, it's a cognitive burden.

Multiple personalities could make it easier to switch value systems; but probably wouldn't make it easier to integrate them.
I'm pretty sure he's referring to things like unneeded patterns, extra abstraction. I'd add stuff like "one type per file" (totally breaks down if you don't have large types). Or pointless use of classes/instances, when you're just providing functions. For example, if you create a "SendEmail" function, then needlessly put it in an object. If the object isn't carrying any state, and if you're just replacing "EmailThing.SendEmail" with "var x = new EmailThing(); x.SendEmail" -- that's pointless extra code and can be removed.

As I've gotten more experienced, I do less "ceremony" and more "write code that does stuff". It hasn't seem to hurt, and I end up with less code to maintain.

Explicit is not always better than implicit. If you're being explicit about obvious facts, that's pointless verbosity. Type inference is a good thing; take advantage of it. Implicit's only an issue when there's complicated or hidden rules at play. For instance with automatic conversion operators that do "magic".
What is the orbit for current satellite ISPs?
We must have seen different ADPs. The one I saw was still 1990s security all over the place. It didn't look like they had even heard of security.

They're one of those companies that tell their enterprise customers that they are not allowed to update to a new point release of Java.
Google invested in SpaceX in order to fund this Internet satellite project.
How Jessica Alba Built a $1B Company Selling Parents Peace of Mind
> First, if CIOs and IT directors are calling, then it's possible they're confused by the website, too.

I meant to say that they used to call us, back when our website looked like this: https://web.archive.org/web/20130329031911/http://www.docker...

> If it's targeted to web apps and back end services, say that in the first place, instead of "any application."

That was deliberate. Although obviously most people use Docker for web apps today, there is no reason they can't try it in other contexts too. For example, there is a very vibrant sub-community of people dockerizing desktop apps, and running Docker on embedded devices like Raspberri Pi etc. There are also (very) experimental ports to Android, and I heard of at least one person who after learning that Tesla is a modified Ubuntu under the hood, set out to try and run Docker on it (I don't know if they succeeded).
Here is a screenshot, and you are welcome to view the source code: http://brainplex.net/res/Rift.png
Wink, Viral App Created
Note that countries have not succeeded in stopping satellite phone users within their borders... for example, the Taliban in Afghanistan use satellite phones extensively.
Tritiated water will not change the PH of the oceans. There's also a very very tiny amount of it to deal with. The scale of the 2 problems is not really comparable.
I believe some window managers give the option of automatically focusing to the window under the cursor.
I think PayPal was kinda profitable and stuff.
The ability to go off-grid is becoming more of a reality for me now. I'd love to be able to get a cabin in the middle of nowhere, slap some solar panels on top still have access to highspeed internet.

Even if you didn't want to go off-grid, this could open up a lot of developing countries to being more viable remote-working locations. I recently spent some time in Bali and considered moving there for awhile but ultimately couldn't solely because the internet was too slow and unreliable.
Um... how about separate out the tritium? It goes for like $30k per gram, doesn't it?

Corner the self-illuminated exit sign market!
look into mosh, a ssh replacement for high latency connections.
Nuclear has a lot to learn from the oil and gas industry, especially that dilution is the solution to pollution.
I doubt he would, but just as a though exercise: What would happen if he started answering http requests from space for free? Would that be a crime?
It's pretty easy to ignore laws from space.

Reference satellite TV in the middle east. Al-Jazeera is banned in many countries, but still has high penetration as users just ignore the laws.

Saudi Arabia has an outright ban on satellite television... yet 97% of Saudis have access to satellite television. [1]

Iran also bans satellite television, yet more than 70 percent of people Tehran watch banned satellite channels. [2]

1. http://en.wikipedia.org/wiki/Television_in_Saudi_Arabia

2. http://america.aljazeera.com/articles/2013/12/19/iranian-min...
Are those phone companies breaking the law when they let the call on to their network?
US could achieve 100 percent renewable energy by 2050
Ocean dumping is illegal.

It was quite popular for a while. (And - debatably - still is in some parts of the world.)

http://en.wikipedia.org/wiki/Ocean_disposal_of_radioactive_w...
The NIF is not the answer here. I suspect that the facility will only "Blast" a few grams or kilograms of material in its lifetime, we need to deal with TONS of water.
Last time I checked SpaceX was profitable... Just saying...
> None of the companies Elon has been involved with have ever actually generated a profit

Bullshit; there are companies he's been involved in that have turned a profit.

Zip2 made a good profit and a great exit - http://news.cnet.com/Compaq+buys+Zip2/2100-1023_3-221675.htm...

X.com / Paypal generates first profits in 2002 - http://www.ecommercebytes.com/cab/abn/y02/m04/i18/s02

SpaceX is profitable - http://www.bloomberg.com/news/articles/2015-03-04/spacex-pro...

Don't forget SolarCity is turning itself around and will likely turn a profit in a few years (http://www.fool.com/investing/general/2015/02/17/what-to-loo...). The same for Tesla which is expecting to turn a profit in 2020 (http://www.marketwatch.com/story/tesla-wont-turn-profitable-...).
1. At the risk of sounding stupid, will governments allow something like this that can bypass gateways under control?

2. Can cellphone communication work this way on scale (like Iridium)? Bypassing providers like tmobile, sprint etc.
Right. That's an alternative, smuggle your satellite internet equipment into a country where it is prohibited. Could be risky during the smuggling. Also very likely easy to detect since it's not exactly a LPI (low probability of intercept) signal.
years and years ago I had some thoughts tumbling around about how I'd design an automated system for muting/vibrate-mode only for phones in cinemas/libraries/quiet-zones, etc.

The security implications and UX involved in managing settings in a non-infuriating fashion rapidly sunk it though, and I daresay it would never have been practically deployable unless business/landowners/whatever could enforce its use as a condition of entry.

Also, you forgot the hollow tooth + airbag components + RF magic => remote operated ball-gag :P
Iridium SATs are in LEO at 485 mi
I have mixed feelings about it. No doubt, Pocket has become an almost indispensable tool for me. It would be nice if there were a way to do this fully open source, but an "Internet Save" button requires a back-end. How else can such functionality be provided?

(P.S. Sure wish Pocket supported PDFs.)
Podcast: From Coding to Venture Capital with Andrew Chen
I though there was a lot of interesting insights here ranging from blogging tips, tech advisory knowledge and an interesting selection of books. Didn't know about him until a week ago.
http://www.ynithya.com/taxcalc/ is also good
Beats me - but I do bet that these companies don't have any business presence in Afghanistan. And despite the Taliban being involved, which most countries in the world (and the UN) don't like, it hasn't been stopped. Which gives you an idea of how difficult it would be to stop ordinary people from using such a service.
I think Pikmin (by Nintendo) is a herding game as well. Never really played it though, just seen tidbits (got Pikmin 3 free I think on Wii U when I registered Mario Kart 8, still haven't tried it!).
There's been a lot recently about the explosion of tuition burdens. And the ways in which the student loan system is mostly setup to benefit the banks (and to the Feds it's also a positive revenue source).

Is this a sort of step towards civil disobedience? If enough people took this step, would the system change? For the better?

Although I do wonder if the system would change quicker if people refused the costs, refused the loans and made it without higher education until things are reformed.

Neither path is very smooth for the person doing it. Not sure if either will help change things.
From my experience, it's not either-or. First you need "bottom-up" adoption by actual practitioners (in the case of Docker, developers and sysadmins). Then you also need to understand the constraints and requirements of people who are in a position to say "no". Those include managers, but also procurement, architects, network engineers, security teams, etc. Those people aren't the ones championing your product (most of the time they don't have very strong opinions either way), but they have a job to do, and if a new dev tool affects their ability to do their job, they're going to say "no".

It's very common for developers or sysadmin to contact us and ask for a powerpoint deck, so that they can give a convincing presentation to their management about the virtues of using Docker in their new project. We even have specialized teams that go in and do everything they can to help Docker-based projects succeed.

But as you point out, it all starts with someone inside the organization who really, really wants to use your product. Otherwise no amount of messaging is going to save you.
It doesn't seem like innguest hates low-level to me. Kind of random question: What do you think of Rust and ATS?
Yeah, when I posted that I didn't realize that they were only doing a single station - that's crazy.
Thanks. I'll fix that.
Assuming it's only Tritium?

At no point since the meltdown began, through when radiation began leaking into the atmosphere - of which was dispersed and detected around the globe, has any entity associated with the Fukushima plant or Japan shown any signs of willingness to be upfront and transparent about the situation.

The US Navy seemed to be one of the only real orginizations who offered an upfront warning of radiation exposure to citizens. [1] [2]

[1] http://www.cnn.com/2011/WORLD/asiapcf/03/15/japan.us.navy.ra...

[2] http://www.businessinsider.com/fukushima-nuclear-plant-2011-...

[3] http://www.radiationnetwork.com/Message.htm

[4] http://nypost.com/2013/12/22/70-navy-sailors-left-sickened-b...
According to this [1], the amount of tritium that currently exists in Fukushima is no more than 4 grams.

At first I thought that might have been a unit conversion error, but Wolfram Alpha [2] seems to confirm the tiny mass.

So if it costs more than $120k to separate it from the rest of the water, it would not be worth the effort.

[1] https://en.wikipedia.org/wiki/Tritium#Fukushima_Daiichi

[2] http://www.wolframalpha.com/input/?i=mass+of+1+petabecquerel...
I think they're mostly in geosynch/geostationary at 36,000-42,000km or so, with latencies of 250-350ms (pure travel, not including queuing or processing delays)
I hear you! I feel the same way. Just spent three years on an app that is about ready for release. But as a one man show... there are simply limits to what one person can do. It's hard. Basically I learned to take lots of breaks and be patient.
A Marketer Shares Ninja Tactics to Acquire Customers for Your Startup
Again, we're talking about something which is maybe 5 million becquerels per litre, but if it was only 10,000 becquerels per litre, we could just drink the damn stuff.

So if you diluted it all 500 times, the problem goes away. 620,000 tons of water is about...2 supertankers. So if you mixed it with 1000 supertankers worth of water, you could safely drink it (at least as far as the tritium is concerned).

Now, where near Fukishima could we find 1000 supertankers worth of water? Right, the ocean.

tdy721 wasn't joking; dumping it all into the ocean is a perfectly sensible (and safe) solution. (Although as the article notes, it's politically a non-starter.)
Netflix now worth more than Yahoo
So lets make a kickstarter to build tanks. This doesn't seem like a hard problem to solve.
It's easy if consumer devices can talk directly to your satellites. AFAIK, this still needs a ground based relay to be of any use to the average person - it's a replacement for transoceanic cables or ISP backbones, not for WiFi.
The irony that anti-Semites relegated Jewish physicists like Bohr to the "unappealing" theoretical roles [...]

What gave you that impression? They simply fired all the Jewish scientists from their positions, theoretical or not. The abundance of scientists of Jewish descent in early 20th century physics is not because antisemites made them take up theoretical physics - the methods were much less subtle.
PLease please please, destroy, demolish, obliterate: Comcast, verizon, At&t.
You should check out mosh for use on high latency connections:

https://mosh.mit.edu/
That is a microscopic fraction of the 6km+ deep Pacific, right?
Show HN: Kikbak.tv automated top 100 music videos on the web
To what ends would you change his mind on this issue? For Internet points, or for a greater good? I don't begrudge anyone with a religious devotion to the other view in this particular matter, if only because we have "known" wrong facts before, based on evidence that appeared to be sound and was considered to be incontrovertible at the time. And even true facts based on sound evidence are not always absolute, or unalterable. You just want it on record, or what?
Hi all! My roommate and I are Seniors at Cal Poly SLO and we built this webapp over the past couple of weeks. It is much like the acquired wearehunted, the dead twitter music, and the new wonder.fm except with music videos! Kikbak.tv goes through hundreds of blogs all day looking for new music videos. Once we find them, our server starts to track the social shares and plays associated with it. This gets transformed into a top 100 chart that changes throughout the day as videos get posted to blogs and the videos themselves get more popular. I would love feedback, thanks!
It's worth the effort if (Cost of extraction -$120k) < (Next best solution)

ie, if the next best is to store it, and it would cost $1M. but filtration costs $1.1M , its actually $20k better to filter it.
FEC and interleaving induced latency will likely become the dominant term for LEOs.
Swift Education
Why is it a good idea to store it concentrated in tanks, rather than just diluting it out in the ocean?

It seems like we're spending a lot of energy just to hold on to this stuff in the riskiest possible way.
> if I want to build a successful business, why not choose an optimal career and then hire someone to build the business for me?

That's what angel investors do, right? First they make lots of money and then they invest on other people's business.
My understanding of it is that when light passes through a medium, it does not do so in a straight line. So, while the actual speed of light remains constant, it takes longer to get from one end to the other.
Much of the remaining latency is likely coming from FEC and interleaving needed for the RF links.

http://en.wikipedia.org/wiki/Forward_error_correction#Interl...
Considering we have lots of nuclear reactors floating around (ships and submarines), some of which have been destroyed and ended up in the ocean - it's probably the best place to put this stuff.

The world's oceans are absolutely massive and already have millions of tons of radioactive material dissolved along with plenty of cooling power. Maybe the specific dumping zone would be a little radiated for a bit but that can be solved by spreading it out in the deep sea and through natural ocean currents.
Reinventing the Flat Tire (2014)
Actually, you may be on to something.

According to Wikipedia, Tritium is worth $30,000 per gram [1]. I can only assume that we can separate super-heavy water (T20) from regular water since we can separate heavy water (D20) from regular water. I don't know if $30K per gram is enough to cover the separation cost, but it seems like it might...

[1] http://en.wikipedia.org/wiki/Tritium#Self-powered_lighting
At 2.4 kilobits, Iridium is not a major player in satellite Internet.
> Sometimes making code more concise really makes it more obscure.

Absolutely. A clever one-liner may make sense to you _now_, but try coming back to it after a few years when you've moved on to another language/paradigm and can't remember the subtleties of what you've written. I believe "Write Less Code" should be taken to mean "Write modular, reusable code that reduces boilerplate and emphasizes the underlying business logic". Clarity should be the key driver here. Shorter code helps, but it's only a means to an end, rather than the end itself.
Big fan of this post
While even some designs that were thought to be inherently safe turned out to have engineering problems when put into practice, it is probably imperative that we learn how to use new-generation reactors, and build new, safer reactors and new reactor technologies that could solve our current nuclear waste problem. Nuclear needs to be an available tool for bridging humanity out of the oil age.
Quite exciting. At the same time, did anyone watch Kingsman?

I worry about a big play like this in a market with ridiculously high barrier to entry. We might find ourselves in a vulnerable position if we invite monopoly.