skysight-inc/HackerNews huggingface dataset:
With the amount of slop and the kind of drive used (steppers) going out of spec is the norm, precision is mostly coincidential.

If you don't use servos or steppers+encoders for feedback you may just as well assume that anything that you produce is unique. The variability in wire-feed (gripping wire is a tricky proposition) and head temperature adds to this. The result is a fairly rough surface (compared to millwork or lathework) but in the end what matters most here is that it can be done at all.

If you require precision then you're probably going to have to do a little bit of re-work (just like you would with casting), if all you care about is looks then you may have to do some sanding to get a really smooth surface.

3D printing right now does not allow fabrication to the same tolerances that we have gotten used to with even minimal metal working tools unless you are prepared to reach very deep into your pockets.

See above about renting, good quality equipment can be rented for a fraction of the cost of buying bad quality equipment and will produce workpieces that are very good due to the tight control over the head position and the increased control over wire feeds and temperatures.

Consistency (feeds, speeds, temperatures, materials) and precision (accuracy of position, repeatability) are flip sides of the same coin, you can't really have the one without the other, and when both are good then you will have good quality workpieces. If either is not so good then you will end up with rough work, low quality and/or a lack of precision.

Not all work requires precision or good surface finish, it is rare to have work that requires neither.
The Sad, Dark End of the British Empire
Pay Me Double: The quick guide to doubling your freelance income in 7 days
Don't forget the other major class of engineer problems: trying to automate the Human Interaction.

A lot of engineers (myself formerly included) think that Google emerged as a multi-billion dollar company directly from the head of Jeff Dean...ignoring the critical role that things like biz dev (getting that first yahoo deal!) played in their massive success.

One of the hardest lessons I've had to learn in life is that success has very little to do with engineering. The technical side needs to be just good enough to work. The rest comes down to marketing and networking.
Cost, licensing.
You can use web tools that make such estimation.

Examples:

http://www.similarweb.com/ (best one in my opinion)

https://www.compete.com/

http://www.alexa.com
4 easy design tweaks that took me 10 years to learn
Lyft pays the driver the full amount that the driver would have received in a normal ride even when there is only one person who uses a Lyft Line.
A good piece of propaganda.
My heart goes out to these upstanding financial institutions and their shareholders, and I pray that they don't lose too much money compensating their customers for any losses resulting from these attacks.
I have a Solidoodle 3 at home, and a Makerbot Replicator 2 at work. In terms of print quality, the Makerbot is significantly better than the Solidoodle.

There are certainly things I like better about the Solidoodle, such as the ability to use a sheet of glass on the bed, which allows me to use ABS/Acetone slurry to make parts stick to the bed, the ability to tweak all of the CAM settings, the mechanism for feeding the filament into the hot end is easier to work on, I've never had a clog on the Solidoodle, and there are several power users who have shared improved designs for various parts of the machine.

But if I need to make a part that has to be within tight tolerances, or have a good surface finish, I prefer to print with the Makerbot.

Does anyone know of a sub $3000 open source FDM printer that can print as well as a Makerbot?
I'm sure he thought that Iridium usage would appeal to a fixed or proportional fraction of the cell market . Would it? I dunno. People still use Iridium where it's appropriate.

I got a slideshow of the Iridium deployment as part of a startup JV'd by Moto circa 1999. Iridium was one big ole project. Yep.

All this being said, Iridium lasted far longer than the startup.
If you combine 2007 and 2008, Nokia sold nearly 1,000,000,000 handsets in those two years. That's One Capital-B Billion.

Nobody thought an 800-lb gorilla like Nokia could ever be unseated. Looking back, it's still boggling that the collapse took a mere seven years.
That is one way of numbering dimensions, in a certain model of the universe. However, in a 2d game, time might be a "third dimension". Or time might be sufficiently distinct in some model that it does not behave like a dimension at all.

If I write an equation, and graph it, it has as many dimensions as variables. Those variables might have nothing to do with time OR space.
I agree that we'd need to find a way of discerning the truly motivated from those that are just curious to learn programming. We don't want anyone to go through the process of fundraising and attending a bootcamp only to realize that they don't like programming.

Based on our current model, a fundraiser wouldn't have to pay back anyone that contributed funds toward their campaign. So we'd avoid that murky mess that comes with having a thousand micro loans to cover your tuition.

Adrian and I need to really think about some of the harmful effects brought on by the campaign. It's honestly something we haven't thought about too much, so I'm really grateful that you brought it up. Definitely deserves a lot of attention.
That is very nice. What kind of thickness can you cut with those diodes in various metals and other materials? At what kind of speeds?
From Crossbows to Cryptography: Techno-Thwarting the State (1987)
The Technical Alphabet – Reinventing the ABCs
The number of times they mention the insidious threat of the seething hacker horde of "Russians" makes me feel positively McCarthy-esque. Absurd.
Which still leaves the question of the cost of the instruction decoder.
Yes. I agree. The basic ratio of the number of people working (or rather the number of hours worked) vs. the total size of the population is the number we should be talking about.

It is true that this number is affected by people retiring, newborns, immigrants but it basically shows how many (or few) that are producing the goods and services consumed by the whole population.

The unemployment number is heavy politized and it is always easier for politicians to hire economists to design measurements that shows a lower unemployment than it is for politicians to actually implement measures that increase meaningful and sustainable employment.

I think that the (western) world is in a development that will leave us with much lower employment for good. And this is due to the forces for globalization (such as outsourcing of jobs and manufacturing, global competition) and advances in technology (robots, information technology removing middle men and backoffice functions). Much more so than ageing or immigration.

It is important that this becomes a bigger issue in public discourse otherwise we risk ending in bad place with too many people living of welfare and highly skewed wealth and income distribution.
A lot of the rice is actually grown using water from lakes Oroville and Shasta. I grew up in the area, and places like Marysville (south of Oroville) and Colusa don't really grow anything but rice.
Check out c3 v0.3.0's source code. It's the closest thing to self documenting code I've seen so far. Any holes in the docs have been cleared up by grepping the source really quick.
> But the fourth dimension is timespace, is it not?

No. Only in science fiction novels.

It'd need to be measured in meters to make sense as a real 4th dimension.
There are no cell towers in the ocean. That's a lot where they get used.
Or the other obvious step (once 3D goggles mature) of replacing the physical shop with an online shop. Or combine the two: instead of you visiting IKEA's virtual shop, the virtual items are sent to you and rendered in 3D and overlayed on your existing room, so you can walk around the item and see what it looks like in your own room. You then press the "buy" button and it is delivered.

Fun and games then ensues when people figure how to dump the information from IKEA to their 3D printers.
Zero Based Budgeting
this is really interesting. regardless of how our first campaign goes, we're going to seriously examine this as a possible iteration/pivot of our service. We've encountered a lot of people that like the idea of getting more people to learn programming, but a decent amount of hesitation to the current model.

big fan of moving away from anything that buckets individuals into "you are deserving, you are not." creating a group around a specific coding goal provides a nice layer of abstraction away from the individual.
If you believe Shadowstats' figures, the US economy has been in a recession since 1988.[1] Even more hilariously, the price for a subscription to Shadowstats hasn't increased in the last 8 years of 'hyperinflation'.[2]

I wish people would realize they're a complete joke.

Some other fun quotes from the brain trust behind Shadowstats;

> (Feb 22, 2012) Gold to $8,890, Silver to $517 says John Williams of Shadowstats

When this prediction was made, Gold was at $1,775/ounce and Silver was at $34/ounce. 2.5 years later, Gold is down to $1,286 and Sliver is at $19.50. While Williams was very, very long, the price declined between 30% and 40%.

> (Oct 24, 2012) Economist John Williams says the latest round of “open-ended” QE has set the table for a global “dollar sell-off” and “hyperinflation” no later than 2014. Williams says, “There’s no way the consumer can fuel the economic recovery, and there is no way we’re going to see one in the near future.” Williams predicts, “The Treasury is going to have funding problems, and that means the deficit gets a lot worse.” [4]

The dollar is up 15% since then, inflation is still nonexistent, and the 2014 deficit is over $500 billion smaller than the 2012 one.

You'd be much better off taking financial advice from the Dogecoin guys.

[1] - http://www.washingtonpost.com/blogs/wonkblog/wp/2014/07/17/t...

[2] - http://pragcap.com/update-theres-still-deflation-in-hyperinf...

[3] - https://www.goldstockbull.com/articles/gold-8890-silver-517-...

[4] - http://usawatchdog.com/dollar-sell-off-and-hyperinflation-by...
STEM Center USA inspires the next generation of STEM leaders
Thanks for this! It's been a while, but I did use it a year or so ago for a project at work and it was quite handy. It's unfortunate that git doesn't have something like this built-in.
A really interesting article was posted about 6 months ago that covered some of the history and drama around the state's aging water projects:

http://www.theatlantic.com/features/archive/2014/02/american...
I just looked it up.

Cost of the plant was around $4 billion and the 30 year operating costs are apparently around $1.5 billion.

It was only finished in 2012 and so far it has not been required to be used.

Over the course of the drought the government handed out $4.5 billion in drought assistance to farmers and the economy overall had over $5 billion in losses per year. 2002-2003 alone cost $6.6 billion.

To be honest, this looks like a good insurance plan. Australia should build more of them.
because they could have made a decent case that they were merely concerned for their own safety, which led to the subterfuge. And they might have been able to claim that I left it on the bus (the video of the bus ride was not conclusive). If he had not given me the tablet, I had people staked at the location, and we would have placed him under citizen's arrest. Fearing his freedom, he phoned his girlfriend who had the tablet, and I let them both go, but kept the video of the conversation with him. We use it for contract class now. :)
ABI is too high level to have any effect in power.
It just got a lot better with v0.3.0. The code is much more organized and is basically documentation on its own. They also added the ability to call/modify/add internal functions externally so its much easier to build off of.
Greet your customers, and hear what they have to say
Google's go and Mozilla's rust both fit the same sort of space.

Rust especially.
Picture these pictures in reverse but at a coastline then think of the dry after as the normal before and the water as the after.

As a person who lives on a very low island, average 20m asl, climate change is going to be rough :{
While the article may be based on facts, the propaganda machine is running wild obviously.
Stop doing work unless they pay immediately.

Offer a small-ish discount for paying within the next 7 days.

Always always ALWAYS take a deposit up front before you start any work.
I agree that the statement is general and grating and may come across as questionable. In fact, I travel extensively and live in the developing world and my perspective is based on my own observations across many continents and two decades, plus media consumption, meetings with extensive NGO workers, diplomats, journalists and so on. You are of course more than entitled to an alternative perspective, I'd simply wager it's not as well founded.
Agency of Unrealized Projects
> is it legal to exclude people based on gender?

In Australia it's against the law, but the courts can make exceptions if you convince them that what you're doing serves the public interest. Things like gay bars and women's spaces do so routinely.
> By the way, SQL is a pretty complex formal system well grounded on theory. ... Most people don't understand SQL without training, by the way.

I think lots of people understand, or can understand, the theory of SQL. It's the "install this, go into this directory, edit this config file, make sure it starts with the system by doing this, install these drivers for the database" stuff that stops a lot of people before they start. Same applies to pretty much everything that runs as a service, like webservers.
You're going to wait a long time for that. I would personally look for an alternative as I feel the project is not being managed properly. Where is CS road map ? there is none. I hope people will definetly move to CS redux ,which seems to be to CS what lodash is to underscore. Same for Backbone,what's the roadmap ? and noone sees a pattern here ?
The numbers around water "used" for beef are a bit disingenuous. It's counting water used to grow the feed - but feed is relatively easy to transport and can be grow in water-rich areas.
weeks of testing every page he has come across has finally paid off :P
I'm curious how much water the various water projects in California lose to evaporation. The All-American Canal goes through the desert and is uncovered, for example. It seems like people have talked about covering them with solar cells, but it might be valuable just to cover them with anything.
If you're talking about the Imperial Valley (desert), they actually aren't as affected as most places.
I live at 7ft asl. People think I'm kidding when I say I will most likely sell my house due to rising sea-level.
This is a really poor illustration, because it only includes Lake Oroville, which is a reservoir. Reservoirs exist to be tapped like this and drained down. Even a small drought would see a significant change in the water level for a reservoir.
Eh. In D3, just transform the data into X/Y coordinates, create a DIV for each one, and then change the background color based on the desired value.

I think it's d3.scale.color to automatically set up a gradient you plug a value into and get a color out.
When I was just about to get out of the military, I was offered a job as a radio technician at that station - 60k a year. I turned to my buddy (who had gotten the same offer) and said, "Who in their right mind would take 28 bucks an hour to work in Antarctica?"
Ask HN: Why do fast food companies get away with this advertising?
This guy walks into a bunch of different fast food joints, orders food, and then asks them to re-make it to be closer in appearance to their advertisements.

https://www.youtube.com/watch?v=XrZFM2nvLXA

It got me to thinking ... if this were any other industry, this sort of advertising would be beyond the pale.

Imagine if a car manufacturer advertised their cars looking glossy and well equipped by default, and then when you turned up to the dealer, they were half-painted, rusty, and missing half the kit featured in the ads.

How is it that this seems to be okay for fast food manufacturers? Or is it done in all industries, and I'm just being blind to it?
Ok, so coffee script is great.

...but really? This is a totally unexciting minor point release with basically just bug fixes; no major new functionality or interesting features.

Who cares? Why is this rising on the front page?

(no seriously, am I missing something?)
Fine. I bought it. It's amazing.
The DOS design is really clever, interesting, and unique. However, it's takes me back to such frustration and exhaustion that I immediately left the site. Also, it's not that easy to read anything.
I built my printer from parts sourced of the internet, following various incomplete wikis. I like electronics and arduino, and building the printer as a hobby project was a natural fit. There are many uses for the printer when dealing with small electronic projects, anything from project boxes, special connectors, screw terminals, etc. I use openscad to model all the parts, as I'm a programmer by day. If I were not in to electronics and general maker movement stuff, I'm not sure what I'd use the printer for, but as a maker, it's a great tool to have.

The other day one of the plastic hooks on the shower curtain broke. Instead of trying to glue it as I would have before the printer, I just printed a new one. Works great.

The printer:
http://imgur.com/a/URcNC#0
Ukraine Tech Gem Conference on FB
Above and beyond that, the effect of high block times is that centralized miners gain a significant advantage over decentralized ones. The current block latency of the Bitcoin network is in the order of a number of seconds. As we know that current mining pools are indicative of the best connected (many of them have private peering and significant numbers of edge router nodes), we can assume that the majority of the network will be even poorer than this. In some testing the difference between a Stratum socket on the top 4 pools announcing a block was often up to 3 seconds.

For a 12 second block time in Bitcoin, the network would likely collapse down to just the biggest pool, as everybody else would have a disproportionately high number of orphan blocks. Sensible miners would need to move to the biggest pool in order to avoid a significant double-digit percentage losses.

> I thought the risk of a split chain was tied mostly to the wall clock, not the block count?

This is a correct statement to make. The number of blocks considered to be safe is completely irrelevant, and only has the effect of denoting the time on the wall. An hour for 6 confirmations in Bitcoin wasn't chosen so much because it was 6 blocks long, but because it is a reasonable tradeoff between convenience and security. If the block time had been 5 minutes you would need 12 to get the same level of confidence in a transaction. I don't understand why the Ethereum developers appear to think otherwise.
Kinect was something like the fastest selling accessory of all time, so you can't expect too many hits at that level. But there have certainly been many other consumer-visible successes, like Excel's flash fill or Skype's upcoming real-time translation. Then there are enterprise things that consumers may be unaware of, like SQL Server's Hekaton technology. And beyond that, there are lots of additional projects that meaningfully translate to value to Microsoft but that aren't really externally visible, like speech recognition improvements, search engine ranking techniques, datacenter networking improvements, efficient algorithms for traffic routing and prediction, etc.
The Central Valley, where the drought has hit the hardest, is home to major Army Corps of Engineers water projects: http://en.wikipedia.org/wiki/Central_Valley_Project.
Normalization is nice for a mental exercise, but I cannot buy a normalized phone with a normalized i7 that fits in my normalized pocket. Engineering is the art of trade-offs and the i7 has traded off size and power to achieve speed. That is great when you have an i7-scale size and power budget, but if the i7 exceeds your power or size budget it is a non-starter regardless of how efficient (when normalized) it is. Full stop.

The implicit argument of the paper is that Intel could produce a direct size+power+speed replacement for a phone-scale ARM processor, they just need to dial the knobs to small+small+slower. The counter argument is that they have tried but not come close. The Atom line is roughly comparable with respect to speed, but size and power are a problem. The Galileo processor is roughly comparable with respect to power and size but speed is horribly lacking.
I understood your post. I didn't comment on your other points because I didn't feel I had anything to add. I was just trying to be helpful in regards to the particular problem you posted, and for anyone having trouble with recursive problems in general.
A good and accepted practice here on HN is to keep the original page title to avoid any bias from poster, and then add own considerations as comments.
One really interesting example of this is that of humans who perform echo location. Parts of the brain normally reserved for sight are activated, to some degree, by regions of the brain responsible for vision.

Basically, they're not just 'hearing' in the traditional sense, though that happens as well; they're also 'seeing' the sound that bounces back. Kind of crazy
Show HN: Rate your technical interviews
most of these product being ad driven,with the exception of some cloud services,though I really doubt Goggle win that much money on google/drive. It can however scan your files for "metadatas"
There's no way they are in the womb (they wouldn't be able to get inside the uterus, and the immune system would attack them quite quickly if they did).

They are almost certainly transfered via close skin contact (breastfeeding, etc).
Such code would also fail if passed to tools like lint, and would result in warnings or worse when loaded in IDEs. The incredible C toolchain built over the decades is one of C's biggest advantages; friendly-c cannot afford to lose even 10% of it.
> Or the other obvious step (once 3D goggles mature) of replacing the physical shop with an online shop.

I'm not sure they'd ever do that. They want you in their stores. Their stores are structured so that you have to go through everything and see everything and activate that "nesting instinct."

"Hmm, I want a chair, but that cutting board is really nice... and there's a knife block that matches it. And I guess I'll get some storage containers too. Might as well get lunch while I'm here."
People have lived in California since at least 17,000 BCE, according to archaeological excavation. It had about a third of the native population of what is now the USA.
Thanks for sharing Movements.org. I think I can be of help there. :)
The identical article on a different site was posted recently, with extensive discussion:

https://news.ycombinator.com/item?id=7743952
The Feynman Lectures on Physics Book, Now Completely Online
Somewhat to the side of your main point, but curious what you would be looking for Backbone to add that it needs a roadmap for. I'm not so sure that everything needs a roadmap and to be developing new features. Backbone is IMHO a great example of something that already accomplishes exactly the job it is meant to do, and if you want to do anything else that is your business.
There are very good reasons for the "electoral college" outside of "real per-person voting" issues.
Why is an ad the top item on Hacker News?
"There ain't no bugs on me. There ain't no bugs on me. There may be bugs on some of you mugs but there ain't no bugs on me."

This old nursery rhythm can join Santa Claus and the Easter Bunny and the other lies we tell our children.