skysight-inc/HackerNews huggingface dataset:
> A perfect cylinder has a line of contact with the road: the width of the wheel. A perfect sphere has a point of contact.

And both have an area of zero. And the area is what matters here.

> but the perfect examples here are indicative of cylinders having more surface area with higher air pressure

This is not true. It's physically impossible. (What you have done is the geometrical equivalent of dividing by zero to prove 1 = 2.)

Weight of car / Contact patch / number of wheels = PSI + strength of sidewall.

This equation is exact. The geometry of the tire makes no difference. You can not create pressure out of nothing. The pressure on the ground must exactly equal the weight of the car.

And the pressure on the ground must exactly equal the pressure in the tire adjusted for the size of the area of ground contact.

Do you see how for any given PSI (including the strength of the sidewall) the contact patch is an exact figure? The forces must all be equal, it's a basic law of physics.

There are certainly engineering issues, I'm not arguing about that. But the size of contact patch is not one of them. Put the same PSI in a cylindrical or spherical tire (neglecting the PSI contribution of the rubber) and the contact patch will have an identical size.

Typically wheels are made of metal wires and are stiff - so they don't like large contact areas because it means lots of flex. But it doesn't have to be that way. You can make a material that doesn't care about flex - if would be harder to make obviously, but it's not an impossible obstacle.
The cuttings will continue to happen (there has been a lot of layoffs) on the operational team, with downsizing and cost-cutting. Fewer travels, less expensive hotels, and luxurious meals. Also, the 'social justice' projects are already halted.
One of my favorites is David Clarke, who did a superb reading of The Count of Monte Cristo,[1] which is one of the most amazing books I've ever read.

[1] - https://librivox.org/the-count-of-monte-cristo-version-3-by-...
Doesn't work for me because my work internet blocked some Javascript that's necessary to fetch the post. I end up with a blank white screen. Apparently, other people are able to read it though.
Millennial Americans Are Moving to the 'Burbs, Buying Big SUVs
I love this line:

"Do your research online, but create offline."

A lot of times, I'm working on something and in the zone and then all of a sudden I see an iMessage notification and forget my thoughts almost instantly.
Why does RAII require exceptions? RAII is routinely used in C++ with -fno-exceptions.
>… about used car prices since 2015 (though I expected the prices to decline about 8 months before they did)… In my opinion, the clearest sign that something’s wrong is in the bond market. Something like ¼ of the world’s government bonds have a negative interest rate. People put up money today in exchange for less money in the future, it doesn’t make sense…

It's funny, I made two responses[0][1], two weeks ago along these lines surrounding the Tesla bond auction. IMO, most people don't want to hear it because they believe they are doing the best they can with whats available for them to allocate. Too much money chasing the same shit that's consistently providing less and less returns… best to sit quiet in the background and do what one must's in this environment despite it all…

Yeah, yeah, it will be so good for Tesla to sell its new expensive (how many people can afford a $35k+ out of pocket for something that will sit idle for most of its lifetime?), the future™, cars with 0% down to subprime on the mass market once it gets at scale™ to people who can barely afford monthly payments on their used old and busted gas guzzlers… for fucks sake, hedge funds pay for satellite time to time their shorts based on bloated auto inventory now, because people are just waiting to have their new electric cars… who knows, maybe there will be a new gov program, an EBT of sorts for autos, cash for clunkers was a good step in that direction lol

>The market is trying to burn off excess value that’s not being used well and world governments are trying to insolate rich people from those effects.

I think this is only going to exacerbate feedback loops that end up only weakening the governing systems because "god forbid" that any of the The Market™ burn off accidentally get allocated to those who end up besting those who are trying so hard to lock in less money 5-100 years from now on gov/corp bonds…

[0] https://news.ycombinator.com/item?id=14949201

[1] https://news.ycombinator.com/item?id=14949123
Please note that this is still an implementation of the D-Bus specification, but trying to adhere to the principle of distinct peers. As is explained, this is not entirely possible when implementing D-Bus, so it is nothing more than a guiding principle.
There's a great book called The Long Depression which offers a Marxian analysis of these boom bust cycles.

It basically boils down to Marx's Law of Profitability, where the rate of profitability tends to fall as investment in fixed capital increases:

https://en.m.wikipedia.org/wiki/Tendency_of_the_rate_of_prof...
Not sure if you've tried this recently, but I have. Code will open e.g. my 6.3MB (unminified, unzipped) vendor.js file for an app I work on, with full syntax highlighting, instantly. And scrolling is buttery smooth in it. :)
I'm sure they had similar bullshit justifying slavery in its previous forms too.
Advice from people about their own failures and people who acknowledge their luck usually works.
Super nice idea. I remember when I was very young and the Internet was also young, maybe just two, three years, I experienced something strange. In this time we still used US-Robotics 56k modems to connect to the Internet. When I was offline my computer felt dead. Worthless. Useless. Only when I was online my computer felt right and I felt good.

You have to imagine that I loved my self-built PCs even before the Internet came. I spent so much time with them, upgrading them, spent night and day installing and trying new software, stuff like Sierra and Lucasfilm Adventures, Clipper/dBase, Turbo Pascal, QuarkXPress, Corel Draw, saving for hardware such as PostScript laser printers, AdLib later Soundblaster soundcarfd, SyQuest harddrives, flatbed scanners, all the typical stuff. And once the Internet came an offline computer felt like a dead computer.
These Are the Top Books Elon Musk Suggest to Read
> running equivalent surpluses during 'the good times.'

This is because government debt isn't a zero-sum game.

Especially since our currency is no longer gold standard/backed (partly because of the Great Depression).
The Radeon control panel is worse than any electron app I have used, often glitching/freezing.
And while it may have not played out historically in the US, the opposite side of that coin, that is a glut of gold, is just as devastating to an economy.
Yes. I am extremely confident that newcomer wealthy residents were asking for bike lanes in a way that previous less wealthy residents weren't. You might ask yourself why so many people have an interest in avoiding this explanation. It's just politics.
Hi! Email please? Couldn't locate it!
Clearspeed?
The HPC history books are littered with the bankrupt corpses of special purpose hardware.
If we added bike lanes to sidewalks rather than roads I think it would solve a lot of the complaints motorists have.
> especially for a non English speaker

If you don't speak English, every word will be confusing.
Even with games without mod support, you can always use cheat engine http://www.cheatengine.org/
Connect diverse teams like a Product Manager
Jim Clark launches new company CommandScape
Now instead of drawing funds directly from the district, you're subsidizing private schools at the state level.

I send my son to catholic school for various reasons. It's my choice and my cost, and the school provides scholarships to help those less able.

In my state, only a few things common to all students are provided/funded by the state in private schools: non-religious textbooks, school nurses, some transportation and limited bussing to special education.

Personally, I'm comfortable with that model. I am uncomfortable with the state supporting any church, including my own.
GnuTLS 3.6.0 released
There's room for both. There's a reason why a lot of CS programs have shuffled from primarily C to Python (some had Java in between).

Not having to deal with boilerplate and housekeeping lets you focus on learning the topic at hand. Especially in a classroom setting where you're probably focusing on the specific subject instead of real-world dirtiness.

But after learning the basic concept, you do need an actual implementation if you want to do anything.
So you might as well keep/sell it then?
This is fascinating (as an amateur astronomer), have you written anything else on the systems design of these types of instruments, or have any good pointers? I imagine for large instruments there is a massive amount of data involved and lots of stuff to control. I know it's bad enough with just my one telescope setup :)
I think still the marketplace is pretty useful, especially if a taxi service is competing with people renting out their autonomous car to uber while they work or aren't using it. It would also be annoying to have to find an app for every city you're traveling in.
Gambler's Fallacy. Prior incidence has no effect on future occurrence.

We’re not gambling, we’re driving cars. And the fact that the current F1 champion has won some races means that he is more likely to win the next one than I am. And the fact that I have a lower-than-average rate of driving collisions means that I have a lower-than-average chance of having a collision in the future. If you doubt me, ask an insurance actuary.
That's really helpful, thank you. I have no real understanding of how React works, and your explanation helps me know what to look for.
I believe that the previous owner was the founder, Roy Singham: https://en.wikipedia.org/wiki/Neville_Roy_Singham. Also of interest: https://martinfowler.com/bliki/RoysSocialExperiment.html
According to sources, there will be no changes for employees.
It was Neville Roy Singham.
Not informed.
Everything was sold.
Thank so much for your kind sentiments. Much appreciated. Darmiyan team is definitely committed to making a positive impact by mitigating the burden of neurodegenerative diseases on millions of families.
Intersection of testing and verification for better quality distributed software
Cars are different, though you could have pointed out that the Messerschmitt BF-109 had fuel injection in the 1930s.
Bill Gates and Richard Branson Back Startup That Grows ‘Clean Meat’
You know as a programmer myself for the last 15 years I can see how the market has changed and everything is becoming part of the global economy which means the rates are a lot lower which means Ukraine and India are playing a bigger and bigger role I could see private Equity trying to lower costs by outsourcing.

I think there's a fundamental flaw in the idea that you can just pay for cheaper labor- as Steve Jobs has said before the difference in a good programmer and an outstanding programmer can be 50 to 1 or 100 to 1 you can't capture that by trying to cut your cost from $100 an hour to $20 an hour.

Software inherently is one of the most scalable business models in the world the cost of manufacturing is almost zero all of the cost is in the design they should be able to make money. The mindset of being a consulting firm has to be changed.
Yes, it is. The forces must all balance exactly.

> a spherical tire will have to deform more than an equivalent cylindrical tire

This is true.

> With current materials this means you'll have to run it at a lower inflation pressure

This is not true. Yes, the strength of the rubber plays a part (adding to the effective PSI), but not a large effect unless you are almost flat.
The longer I'm in this bizz, the more I've come to believe that consulting services, be it Tata, Infosys, Microsoft, IBM, all the way down to boutique mom and pop shops, is the most efficient means to extract wealth from large companies. No products, just putting butts in seats. One of the richest guys local to my location sold a "network security" consultancy some years ago, for example.
Not just for cyclists. Around here Google Maps will find "shortcuts" through single track back country roads which are especially dangerous in winter by car or bike.
Alan Turing established a gold standard for what intelligence is quite some time ago. Modern computers still fail the unrestricted Turing test.

No doubt he'd be impressed at the progress, but failing the test is failing the test.

There is a difference between behaviors which seem intelligent (your roomba) and actual intelligence. Seemingly intelligent behavior (like Eliza) only works when your counterparty isn't too probing or discriminating. It's like a Potemkin village of intelligence; looks great, as long as you don't look too closely.
So, SIMPL?

Synchronous Interprocess Messaging Project for LINUX (SIMPL) is a free and open-source project that allows QNX-style synchronous message passing by adding a Linux library using user space techniques like shared memory and Unix pipes[3] to implement SendMssg/ReceiveMssg/ReplyMssg inter-process messaging mechanisms.

https://en.wikipedia.org/wiki/SIMPL

http://icanprogram.com/simpl/
I remember as a 12 year old a cop swore at me and told me he was going to take my bike if he saw me ride on the sidewalk again. So then 2 blocks later ANOTHER cop is swearing at me calling me crazy and going to drive me home for riding on the road when there was a sidewalk to ride on. I laughed and said the other one told me to get off the sidewalk. He called him and they got in an argument and hung up on him. I just rode my bike on the sidewalk.
A few notes here:

- An unmentioned alternative to this pricing is that GCP has a deal with Cloudflare that gives you a 50% discount to what is now called Premium pricing for traffic that egresses GCP through Cloudflare. This is cheaper for Google because GCP and Cloudflare have a peering arrangement. Of course, you also have to pay Cloudflare for bandwidth.

- This announcement is actually a small price cut compared to existing network egress prices for the 1-10 TiB/month and 150+ TiB/month buckets.

- The biggest advantage of using private networks is often client latency, since packets avoid points of congestion on the open internet. They don't really highlight this, instead showing a chart of throughput to a single client, which only matters for a subset of GCP customers. The throughput chart is also a little bit deceptive because of the y-axis they've chosen.

- Other important things to consider if you're optimizing a website for latency are CDN and where SSL negotiation takes place. For a single small HTTPS request doing SSL negotiation on the network edge can make a pretty big latency difference.

- Interesting number: Google capex (excluding other Alphabet capex) in both 2015 and 2016 was around $10B, at least part of that going to the networking tech discussed in the post. I expect they're continuing to invest in this space.

- A common trend with GCP products is moving away from flat-rate pricing models to models which incentivize users in ways that reflect underlying costs. For example, BigQuery users are priced per-query, which is uncommon for analytical databases. It's possible that network pricing could reflect that in the future. For example, there is probably more slack network capacity at 3am than 8am.
Clickbait text loads a lot faster and is easier for me to mentally sift through than thumbnails. Agree they're both BS though!
Anecdote: I come from a working-class neighborhood. Adults on bikes were roundly ridiculed when I was growing up. There is absolutely no chance (or evidence) that the adults of my childhood had any interest in bike lanes (for exactly the reasons you describe).
For the case of RAPPOR (and for what Apple is doing), you do not need to trust the aggregator with your data. These algorithms operate in the "local" model of differential privacy, where all privatization occurs on the users' local machines before being sent to the aggregator.
Weird there isn't a src directory collecting everything together

Hashtables are one of those data structures one can easily get away with never having to write on their own, yet still use every day. In scripting languages it's impractical to roll your own, & in the more abstracted low level languages there'll usually be a pretty good generic version. Yet there's much room for variation

I had the joy to be out of reach of off-the-shelf hashtables for luwa,

init: https://github.com/serprex/luwa/blob/436c7271120fcd116af30e9...

get/set: https://github.com/serprex/luwa/blob/436c7271120fcd116af30e9...

hash: https://github.com/serprex/luwa/blob/436c7271120fcd116af30e9...

Still need to implement Lua's sequential-portion-as-array logic. I do like the API not having a 'remove' method, opting intead for nil by default. nil value entries get vacuumed out when rehashing. This ends up acting as tombstone. In an earlier iteration I was using 0 as a marker distinct from nil, but an implementation detail is that nil is stored at address 0.. oops
You're right. mis-replied in the thread.
Do these companies let existing sublease their own space on say a seasonal basis. Some companies need lots of space in their own buildings at certain times of the year and not others. Limited time subleasing seems like it could be a win.
It isn't going anywhere in terms of energy production either. The energy density of oil, gas and coal isn't something that the fads ( solar, wind, etc ) can come close to.

Most of the world's electricity comes from coal. Most of the world's transportation fuel is oil. Most of the world's heating/cooking/etc is from gas/coal.

Unless, the rest of the 3rd world is content with living in 3rd world standard, consumption of oil, gas and coal is going to increase worldwide. Coal may stagnate in the west because of laws, but collectively ( oil/gas/coal ) usage is going to increase in the west and the rest of the world.

Unless there is a true economic collapse, increased oil/gas/coal is a fact of physics.

And of course, you pointed out that we use petrochemicals and their byproducts in almost every facet of modern life from toothpaste to smartphones to food packaging to fertilizers.

It is amazing how a small group of environmentalists and their allies at the "clean" energy industry are able to lie about basic physical facts.

The major growth in population and energy use is going to come from africa/south asia/southeast asia/middle east. Do they really expect these people mired in poverty to forgo oil/coal/gas/etc just for environmental reasons? Do they expect these people to live at 1/10th the living standards of the western world just to appease the wealthy environmentalists?
Didn't happen to the US, but did to Spain.
>being able to go where you want, any time you want

And self-driving taxis mean you can use them for those journeys, and rely on more efficient public transport for everything else.

> in a conveyance that doesn't smell like urine

This is not an inherent issue with public transport. I take the bus to work every day and it's never smelled of urine.
> I wish people would take a cue from academia and post more abstracts/tldr's.

Then they get downvoted by people who think "TL;DR READ IT" is a masterful blow against everything wrong with Kids Today.

To be more serious, there's enough people who apparently regard summaries as lazy that it's hard to predict whether they'll be welcome in any given forum. Caring or not caring about downvotes aside, posting stuff that's unwelcome isn't very sociable.
And the flight hour cost of one of these is double the price of a 1970s/80s carbureted 152. Guess which one the majority of student pilots are learning on.
Golden Age of TV – Writers Are Reaping the Rewards and Paying the Toll
Presumably, the classic mechanism underlying speculative bubbles: investors buying because they expect to be able to sell to other investors at a higher price, later.
This is probably the best possible course of action at this stage, even if I'm extremely skeptical about the longevity of the fork. The ideal scenario is to compartmentalize people who can't get along, like you would in a workplace - having two separate forks that absorb each other's changes is not too far off from that.

There's another reason too; there's a theory going around that there's a sizable pool of potential competent contributors who are currently staying away from the Node.js project (and other projects) because they feel excluded (and this is commonly used as an argument as to why policies need to be changed). This fork is going to show whether that group of people really exists; if it does, then the fork will thrive, but if it does not, then it will die.

I don't think there's much to do about this now other than wait and see it play out. The results of this fork will become obvious soon enough, and it seems that this at least will get everybody off each other's backs for a while.

EDIT: Also, let's dial down the vitriol in this thread a little. There's no point in getting outraged over something that'll resolve itself.
> the Marxian school

Marxist.
Unfortunately, I don't have any examples off-hand. It was a month ago. I'll see if I can dig the repo back up and reproduce the error.

As for how it failed, it did not segfault. It just stopped and dumped me back out on the terminal with no output at all.

(I'm on OSX 10.12.6.)
But would that be faster than numpy? numpy in typical setup would use SIMD or other math kernel (mkl, blas, etc).
Crowdfunding campaign's goal: Buy Twitter, then ban Trump
“As a user” needs to stop
As front-end frameworks constantly improve, more and more responsive and complicated UIs are in demand. With all the long hours spent in developing UI/UX, wouldn't it be great to have a way to gauge the UX of your site? Spion IO is a lightweight focus group management API that can capture and replay a user's interaction on your site so you can easily review sessions and improve the UX of everything you build.
Jim Clark is in pretty rare company having created three unicorns in his career. I wonder if anyone has been the founder of four?

Terrific interview of Clark by Jason Calacanis. To my knowledge it's the first interview he's granted in sixteen years.

https://www.youtube.com/watch?v=_rL1LnXo3Gs

If you want a primer on Clark's career Michael Lewis wrote a book about him in 1999 at the height of the bubble:

https://www.amazon.com/New-Thing-Silicon-Valley-Story/dp/039...
This has been proposed many times but doesn't seem to be practical or cost effective. The airport infrastructure investment would be huge. And aircraft would have to be redesigned so that the nose wheel (catapult attachment point) could handle a much higher sheer force. Making those parts stronger adds weight, which wastes energy during the rest of the flight.
Wonder how many zombie film/tv/game creators are/were computer science nerds
Show HN: Slik Prospector – Find Anyone's Email (slik.ai)
by wilozxc 288 days ago

https://news.ycombinator.com/item?id=12899814
Riding an ebike has dramatically changed the routes I take when commuting because I now prioritize safety and enjoyment over pure efficiency or avoiding inclines. My commute is 25 minutes on an ebike vs 70 on a regular bike, or 30 in a car in traffic.
> biggest price differences between them and smaller hosts such as Linode and DigitalOcean.

I suspect that the smaller hosts' plans traffic quota is sold below their own cost - assuming (correctly) that the vast majority of customers would not use anywhere close to the limit.

The traffic quota also scales much slower than the price as you move to bigger, more expensive plans.

I guess that it's fine if you reach the limit on a few servers, but if you rented 1000 x $5 droplets from Linode/DigitalOcean, and maxed out all of their traffic quota, you would get kicked out. Has someone tried to use these hosts just for cheap file servers?