skysight-inc/HackerNews huggingface dataset:
I think this is humorous, and, in a way, brutal. Keep in mind it's not an official document from Postgres but rather just a guy who is big on Postgres writing a funny, and yes, snarky response to Uber. He makes some decent points, if not about the technologies themselves, about people switching to something more or less equivalent for reasons that could easily be interpreted as more gut reactions than solid business and tech necessities.

To me, Uber acted as though someone bought a Honda and it had some mechanical issues (and no seat heat), so he went apeshit, drove it off a cliff, then bought a Toyota thinking he will never have that problem again.
ITER is actually a small scale model. Full scale would be DEMO, a few decades in the future :) .
Maybe one day we could connect the individual pods, and even gasp route these "coupled cars" on rails above ground.

I wonder if anyone has tried that yet?
Your description of what these companies do is distorted. They are not actively developing technologies with the purposes that you described or even as any such consequential purpose.
I mean, you can easily cover up the hole with a sliding door pretty quickly after dropping, or, as someone else mentioned, raise fences during the process.

This is far from the hardest problem to solve in the video.
Yes, sea ice has increased in the Antarctic. https://www.nasa.gov/content/goddard/antarctic-sea-ice-reach...

The coupling between climate and sea ice is more complex in the southern polar regions, and the increase in sea ice there is also likely to be an artifact of global warming. But this may explain why a global chart doesn't show the sharp decrease you'd expect.
A common misconception among devs is that the product must exist in order to test if people will pay for the product. This usually causes the dev to never bring something to market because deciding when something is minimally ready is hard. Instead, consider:

Step 1 - spend time finding people who will pay you instead of building something speculative

Step 2 - you are now a business person, congratulations

Perhaps a few steps in between step 1 and 2 might be to understand market size, growth potential, realistic operating expenses, burn rate, etc.
A thermal runway event would be way more gradual and there would be time to react. A rupturing tank would pepper you and everyone within 50 meters with sharpnel. Both are very rare events though but still
So what you're saying is you'd rather get stuck in line waiting for tunnel access instead of actually driving to where you're going?

Based on that video it looks like the cycle time on those platforms is pretty limited. There's a fixed number of them circulating at any time. You'll be stuck waiting for one to pop up even if you're second in line.

If you're tenth? Get out a magazine.
Honestly though these same sentences came up around Teslas too.

And battery production? And crash test safety? And coordination with NHTSA?
I think you are presuming here about the 'complete picture'. The point is not to encourage anyone. I am sure people can make their own decisions.

We need to highlight the issues with libvirt that leaves a great technology like kvm unused. Security can be used to close down any discussion but the result is many people are using virtualbox and not libvirt.

Seccomp, selinux or Apparmor can be used without libvirt as required so I don't see this as a security issue. On the contrary the needlessly complex XML config files likely put many users off from using it properly or using it as all.
Elon has stated that he believes it is possible to reduce tunnel creation speeds by 5 to 10 times, and that this is what they will work on doing:

https://youtu.be/FPzpugrbwBE?t=120
Facebook (TAO), Dropbox (Edgestore) also moved to a schema-less database design. I wonder how these large orgs manage versioning of their models...
Somehow I think Elon Musk has made it through the middlebrow dismissal phase of this if the concept has made it this far(to include actual digging in SpaceX's parking lot even).
Tribology of cardiovascular devices: A brief review
I seriously think Canadians should be worried more about Russia than the US. They are the ones laying claim to Canadian Arctic Waters not the USA.
Imagine your grandmother managing her passwords
There's a number of times when I've finished reading a book, reading an article, listening to an album, or watching a movie, I'm left thinking "What the fuck was that?" It didn't necessarily bring joy, but it made me think, and much later I realize how good it was. Zen and the Art of Motorcycle Maintenance is the best example of this.
Hyperloop at least has the right idea: Building above-ground is vastly less expensive than tunnelling.
Having just read through the slide deck, I'm having a hard time coming to the same conclusion you do. Overall, I thought it was quite balanced, pointing out strengths and weaknesses of both MySQL and PostgreSQL. The author even started out with a slide with Inigo Montoya, "You insulted my elephant. Prepare to die", so he was clearly cognizant of the fact that this could be taken as purely a blind defense of PostgreSQL, and that is not the intent.

Would you mind taking the time to point out what phrases or slides gave you the impression that this was written from the position that "Uber engineers had bad experiences with postgres because they are morons"? I know that different people can get different impressions of the same material, so it would be helpful for me to understand better what gave you that impression.

There are a couple of comments like:

> I assume the company the size of Uber can figure it out. C’mon

> But... c’mon. Uber?

Both of these I think reflect the idea that it's likely Uber would have been able to continue to use Postgres if they were interested in fixing the issues they had with the system, rather than had additional, other motivations for doing so, the belief being that the Postgres-specific issues they list are likely soluble if they had wanted to put in the effort. They're a large enough organization that they should have had the resources to do so.

That doesn't mean that their decision to move off of Postgres for those other reasons wasn't the right thing to do: just that there's not enough information there for us to really understand the decision process. From a Postgres community standpoint, it's important to make sure that they have quality answers to the issues publicly raised by very visible companies such as Uber. Many people will read about Uber's experience with Postgres, and it makes sense for the Postgres community to be clear what can be done about them.

Your point about "postgres is hard to use correctly" I think is one of those things that it's hard to use a lot of the systems out there—not just Postgres—at the scale that Uber or some of the other large installations do. That's when you really become aware of where the stresses put on the systems start to show and what you need to be aware of to tune and set them up correctly for your use case.

Overall, I think 'gdulli's response (https://news.ycombinator.com/item?id=14223170) is largely on point.

Like I said above, if you'd point out which parts struck you as particularly unfair, I know I'd benefit from it to hear more from your perspective.
This is very, very wasteful compared to actual mass transit. A subway network is much more effective at delivering people.

If he's looking for mega-good, Musk would do significantly better to drop a full subway network.

edit: tunnelling is a broadly solved problem. It's difficult, expensive, slow, etc. But there's no engineering reason why a hole in the ground can't happen. Musk might be able to drive some significant improvements there. No idea. But tunneling itself is not a reason to knock an idea beyond the cost and geoengineering involved.
> It'll be another moonshot company if you can pull it off.

Your phrasing is interesting given that SpaceX announced sending two people around the moon next year.

http://www.spacex.com/news/2017/02/27/spacex-send-privately-...
Metal on metal also has a fraction of the rolling resistance.
That is manifestly not true. See the chart here:

https://earthobservatory.nasa.gov/Features/SeaIce/page2.php

Don't confuse global sea ice figures with those for Arctic sea ice.
I'm aware of my own city that has done this... hundreds of millions in tax payer money to move the nba team downtown instead of across the river

http://www.bizjournals.com/sacramento/news/2014/05/20/downto...
Introduction to using CSS in webpack for newcomers
People said exactly the same thing about toilet paper when it was invented.
well I think a lot of problems arise in these fast running companies.
a company that scale's up slowly and brings their tech stack up and forward with a small team that slowly adds people (so that everybody can learn from people working a little bit longer on the stack) will lead to a way more sane teck stack than a extremly fast growing team + technology.

also I loved some talks about instagram. (https://de.slideshare.net/iammutex/scaling-instagram)
Scaling: replacing all components of a car while driving it at 100mph (And the end slides 150+ are awesome, too).
And while they use PostgreSQL and talk about everything, they also did engineering quite right and prolly that's the problem of Uber.
They tried to get to big to fast and know everything burns (not just their tech).
As compared to losing or forgetting a password?
Custom built Ryzen Desktop with a high end gpu? and one or two 4k monitors maybe
So, they archive the data and promise not to collect it (look at it) unless they have a national security letter signed by a judge^H^H^H^H^H drinking buddy from the office.
Incorrigible Sin: The story of a 17th-century Massachusetts fornication trial
Anyone know what it's costing Tokyo Mwtro to keep digging tunnels at very large depths? They have great coverage yet they're still digging new lines.
Do you really think that no one, not even Elon did notice? I would rather assume, that for this concept video they considered this detail as non-essential and the actual entry points would look quite differently (and safer) than displayed. They most certainly would be different to those "parking spots" shown in the video.
This is the thing. Why on earth would you build this insane network to ferry one person in their car, the displacement of which could probably move 8 people using the same footprint. I think they throw that idea a laurel at the end, where a more people-pod-like vehicle is getting lowered in the same manner.
> This is interesting but I've always thought we should do it in such a way where someone could take say $100K out of their 401K to start up a business. This money is sitting right now and doesn't help grow the economy.

No, it's invested, probably in one or more businesses, and therefore is helping to grow the economy.
This is an extremist position - that I should either live somewhere as dense as NYC or as sparse as the midwest. Moderate density has some of the benefits and drawbacks of both.

However, given that the Bay Area is an "economic powerhouse" the way it is today, I don't accept the argument that it can't continue to be one without drastically increasing its population density.
These platforms will have to strap the car down somehow to prevent someone from driving off the platform while it's operating.

A crash at that speed would wreck that tunnel and put it out of service for weeks.
given that it's made with unicode characters, as opposed to just ascii, I believe it is an emojicon ;)
The reality is that the majority of the areas of the United States are like the environments that you prefer -- low-density environments built around the car. Personally, I prefer a high density, walkable city, yet really my only option in the United States is NYC (where I live), as other cities that come close (SF, Chicago, Boston, DC, etc) don't run their transit 24 hours, or require some use of a car as neighborhoods aren't well connected by that transit.

I think it's completely reasonable to want to have a second city in the United States that can compare to NYC and all the benefits that come with a high density, multi-zoned, well connected city. Whenever I think about where else I could find this if I were to leave NYC I end up finding it really would mean moving abroad.
Shared self-driving cars would essentially be an ultra-efficient bus service. Instead of huge (often half-empty) vehicles driving set routes, you have small custom electric vehicles (remember, the interior could be anything) going exactly where they're required.

Keep the trains, but replace buses, taxis, and probably quite a lot of private cars with an automated fleet. It would be a huge change, a huge improvement in many lives.
>for example, doesn't train A.I. to write software

Actually there is reasearch in that direction. Genetic programming comes to mind (https://en.wikipedia.org/wiki/Genetic_programming)
It would be something which takes a specification and retuns a computer program. Somebody still needs to write the specification though.
Thanks for the constructive criticism. Coming to think of it I did modify my writing style completely 7-8 years ago. Went from cursive to not so much. Some of it clearly lingered. So I will take a note of that. Like an another comment pointed out learning about glyphs will go a long way and that's next on my to do list.
A subway, but you have to be in a car to use it. Brilliant.
Comments moved to https://news.ycombinator.com/item?id=14223020. Although this one has a few minutes' seniority, that one is (a) the original source and (b) currently at #1. So it seems like it should win.
The Boring Company:

...solving the hole problem

...it's underground

...making tools to take you down
This approach is also flawed, as people tend to share different type of content at different times. The same person may be tweeting about a specific conference they attends to, commenting some breaking news or their holidays, etc. They may also change their interest over the course of time.

I created an influencers analytics solution some years ago (tribalytics.com), and Social Network Analysis (SNA) applied to people's followers got us much better results: Instead of analyzing a twitter user's bio, we would also cluster their followers into communities (according to how they follow each other), then summarize each community's characteristics. This gave us multiple accurate segments allowing to qualify a person

e.g.:

* 35% marketing and social media professional

* 10% foodie

* 15% kayak fan

* etc...

I'm not active anymore on this solution though, as that analysis was quite expensive and too complex for what our target customers marketers were looking for...
I would think that elevator has less capacity than a tunnel entry would have. The video compensates for that by having multiple such elevators, closely spaced, that presumable share an on-ramp. I'm not convinced that gives you enough capacity, because each car being lowered on that on-ramp blocks traffic for quite a while.

Also, entering this system leaves a big hole in the street where the carriage was. Before another car can enter, a new carriage must be brought up from below. That decreases capacity even further, except for the ideal situation where that carriage always carries a car. In the less than ideal sitautin, there's the added problem of getting that replacement carriage in place at just the right time (for example, at the end of the day in a business district)
No, essentially all modern metal implants are non magnetic, e.g., titanium. They go through MRIs all the time.
You could change...

> And concrete production? And underground hazard detection? And coordination with city infrastructure? And...

to...

> And battery production, and driving hazard detection, and coordinating with the FAA and NASA, and rockets, and...

It's not guaranteed success (not even remotely) but if I had to bet on anyone...

You act like Musk does all the work himself. If he wanted to he could hire the best and brightest in each of those areas and they can work in parallel.

I don't even know if the guy is a good engineer. But I'm pretty sure to have the success he has had he knows how to inspire them.
Primitive Technology – Water Powered Hammer (Monjolo)
The Disney version of this concept: [1]

[1] https://www.youtube.com/watch?v=e0q_oP9TPD4&t=2479
> the Arctic is a tremendous shortcut for shipping

The Economist article says, "the much-vaunted sea passages are likely to carry only a trickle of trade". Do you have any information on the prospective volume of trade?

> it's surrounded solely by states with a strong rule of law, making piracy unlikely.

For another reason too: Piracy usually is conducted by people.
Interesting, always nice to have history/a name for a concept.
Is there a video of this presentation? Was this from pgconf 2017?
The amount would be way over Judge Judy's limit.
The video of one of the top bots playing a top human makes it seem like the AI has a long long way to go. I don't know if it was just the AI recognizing that it couldn't win any encounters so it just held back and lost even worse, or if it's strategy is just bad, but the human player made it look terrible.
Do you ride a bicycle? Tho I guess it would be too hot in LA for that most days.
I don't think you know what these terms mean.
Degradation of infrastructure is caused by heavy vehicules (trucks), weather and bad driving. Tunnels solve these 3 issues.
Telecommuting is a lot cheaper and easier.

Also, what is the point of those rails? Seems like self-driving cars would be much easier and require a lot less.

I think the robotic conveyer belt style design like seen in movies like iRobot would be cheaper and more convenient. Plus, having it so people don't walk to their cars means you don't have to worry about theft in parking garages as much either.
The parallelization problem doesn't really go away though, since you still need to figure out how to do that to exploit all the cores effectively.
This program likely started under Bush but was KEPT by Obama. It really upsets me that people give him a free pass for such an egregious violation of the Constitution.
> When a product is in production, people will go through hell to make it work a little better

No they won't. https://www.linux.com/news/about-40000-mongodb-databases-fou...
I'm not saying that -- I'm saying the economy powers change and fighting against it is a losing battle where already disenfranchised groups are the casualties. I think the "I have mine" attitude is deplorable and those people should go have theirs somewhere else.

> I don't accept the argument that it can't continue to be one without drastically increasing its population density.

I don't see how without either limiting the economic growth or becoming a miserable place to live. I did my time in the Bay and will never move back.
Their publication is also on Medium.

The upside (as it was described to me) was that it would then be exposed to their 500k followers, the downside being that it would no longer be in my own publication and thus on my own domain.

The only reason I was even considering it was that I don't know how Medium promotes articles internally, so I figured the boost of the extra followers could help. But I figured maybe Medium doesn't even work that way?

Thanks for the input - I was kind of leaning towards staying put anyway, and this reinforces that it's the right call.
The easiest solution is to make it a covered "garage" with doors on both sides then the hole is always covered. But that doesn't look as good on a promotional video.
When public transport is ubiquitous, the last mile is really just that, a mile, tops (in urban environments). The difference between public transit somewhere like Japan, where everything is linked and you have intermodal hubs efficiently connecting higher speed and lower speed transit and what we have in US cities is staggering. It's downright easy to cross the entire country in the span of a few hours, only stepping foot outside for the very short walk to the nearest metro. Then you usually just have metro -> shinkansen -> metro, all connected to eachother, to get to where you have to go. You might need to change your metro once, but that's hardly an inconvenience when the connections are in the same building and you just walk a few feet from one platform to the next.

Compare that to Seattle, where my friend got lost trying to get from the light rail to the incredibly slow train up to Vancouver because they're several blocks apart. And then had to do the same on the Vancouver end for the same reason. To make matters worse, the train between the two cities is actually slower than the train between Tokyo and Hiroshima, with roughly 3x the distance.
What's "super-irritating" is that you guys keep trotting out the same predictions in an attempt to induce panic, even though those predictions have failed time after time.

See up-thread, where scientists were predicting an "ice-free Arctic" for 2013. And 2019. And now 2040.

I believe there were predictions for the Arctic to be "ice-free" by 2000 as well, but a quick Google isn't turning up a solid reference.

Yes, the earth has been colder than it is now. Many times. It's also been warmer than it is now. Many times.

"It isn't, the rate of change is completely different by orders of magnitude"

That is simply not correct. There is plenty of evidence that ice ages can occur over a time scale of less than a hundred years, and some evidence that it can happen on a decadal scale.

Heck, some of us are old enough when the threat of an ice age was the scare story.
It's fairly well-documented that viewers of right-wing news channels like Fox are extremely poorly informed compared to viewers of other channels.

This isn't up for debate. The numbers are both objective and unequivocal.
I'm still waiting on this to be revealed to be a part of the new Nathan For You season.
fyi you don't need oil to get moist loaves: source 20+ years of making naturally leavened and regular bread.
Well, Tesla is getting into the large vehicle industry, so it's not crazy to think they'd make autonomous vehicles for public transit if there was a market for it.
A 3D Printer cannot print a material which will crumble, melt or break during the printing process. This excludes a lot of materials due to the pressure/temperature required in order to achieve cohesion. Natural teeth are made of a nanostructured material (dense hydroxyapatite nanorods in a less dense hydroxyapatite matrix) which is the sort of thing that cannot be 3D-printed.
It's a metro area of 8 million people. That population is larger than many european countries! It's one of the largest cities in the world. If you want the suburban lifestyle, go move to Sacramento.
My thought process was...

Hyperloops are round + tunnels are round = Boring Company

Putting cars through the tunnels is not what I first expected.
Logical Replication in PostgreSQL 10
Of course it is not possible to prove that a particular algorithm "does the right thing", because "doing the right thing" is an inherently vague notion. The issue with neural networks is that we often don't understand how they work even under idealized conditions. In the case of the PCFG, we can characterize precisely which sentences will or won't be parsed for a given parsing algorithm. We are never going to have an explanation of how real world parsing works because the real world is too complicated. But we might hope to figure out how the techniques that work in the real world can be understood as extensions of techniques that work in idealized conditions. The PCFG is a good example of that. There's nothing to understand about the probabilities. As you say, they're amalgamations of an indefinite number of real-world factors. But there is a core to the parsing algorithm that we do understand.
Why does it even need the rails when the cards have autopilot built-in???