skysight-inc/HackerNews huggingface dataset:
I wish Boom the best of luck in getting a working product, but they need to fix their marketing. There is absolutely no way that plane tickets will cost 75% less than Concorde tickets, unless something drastic changes from the norm of air travel- either severe baggage restrictions, extremely cramped seating, or different fuel.

Even with all the greatest computer model, one thing remains the same: it takes a massive amount of thrust to maintain supersonic flight. EVERY airplane that is/was capable of supersonic cruise (SR-71, XB-70, F-22, Concorde) have/had comically oversized engines compared to what design rules of thumb would suggest. New technologies enable slightly more efficient airframes and slightly more efficient engines, we are talking about a few percent overall. So, I can see tickets being 20% less than they were in the Concorde's day.

Part of the reason I think they have mis-calculated a number is that they might be calculating a flight cost that includes fuel only and doesn't include other things an airline has to price into a ticket- namely insurance and maintenance. Insurance for the first supersonic passenger plane since the Concorde is guaranteed to be higher than a 767. Maintenance is going to be crazy as well- flying at Mach 2.2 places different stresses on an airplane, and they break a lot. All of the current supercruising airplanes are/were maintenance nightmares. Don't think that technology can "magic away" all the maintenance issues that come up with sustained stress on your engines, skin friction, and cooling issues.

Unless something else changes, there is no way you'll be able to buy a NY to London plane ticket for 75% less than a Concorde. How might they get there? Packing people in like sardines, or replacing normal baggage space with extra seats, would both get more paying seats on board, but would be a big setback from what business class passengers expect. Or maybe there is some magic fuel out there that is lighter than Jet-A/B and delivers more thrust and is safe enough for use in a passenger jet. The existence of magic fuel is unlikely, so be prepared for one of two things- 1. your tickets cost more than expected, or 2. you are packed in like a sardine.

Again, I'm glad that someone is trying to make a supersonic passenger jet, but hyperbolic marketing ultimately hurts you in the long run when it becomes obvious that you can't live up to expectations.
But the roof would probably be fine, which is where the drones would drop the packages. Most package theft from what I can tell happens from strangers, not tenants, and tenants are probably the only people with roof access.
This reads like The Onion. I can’t think that anyone would think LinkedIn’s website has improved. According to the article the goals were merely to maintain performance. It’s a pure content site that benefits little if it all from single-page.
Because of these, Alexa O'Brien, Microstopped, and a few other incidents I've seen on HN, I've become very concerned about Google's power over my life, arbitrary moral decisions, and lack of customer service.

Within a week I will take my phone number out of Google Voice. I plan to change emails in the coming months as well. I've started to do regular backups of my Google Drive. I've also started to do any searches on controversial topics in Firefox on DuckDuckGo. If any of my side projects become valuable enough, I'll probably move them off GCS as well.

I'm a little weird in the way I think, so maybe I'm the only one so concerned. I'm probably too paranoid. But sometimes I lose a little sleep thinking about the potential consequences of Google randomly closing my account.
Tesla Strikes Deal With Shanghai to Build Factory in China
Yes, I see that. It's second in a very narrow category that I'm not sure equates to 'the entire world' when talking about general taxation. The OP didn't state that "German single people are taxed at the second highest rate in the entire world."

So, while it's interesting, that's not really the same as what the OP suggested.
Ambient IDM Abstract Experimental Drone Set Mixes Oct 2017
So you're saying the taxpayers fund things through an even more regressive process than income taxes.
It could be "if your fact check gets flagged a lot we'll review it and punish your reputation if it's inaccurate."

Not ideal to leave Google in control of Truth (and they might not want the burden), so it'd be interesting to offload that responsibility to Wikipedia, which seems to have a pretty good system for coming to a consensus.
There isn't a single mindset about this stuff in the US, or in France I assume. I'm American and I'm bewildered as to how people can be significantly overweight, much less obese.

I would note that many/most obese people have tried and failed to reduce their weight (or temporarily succeeded). So it's definitely seen as a highly negative trait.

There is a "body positivity" movement here that discourages people from feeling shame about their appearance. Some people see this as a negative thing, with potential health ramifications.

I'd also say that obesity in the US varies quite a bit based on geography and income bracket.
The "instfield" line is halving the exponent. In Smalltalk-80 you could write it

guess := self timesTwoPower: self exponent // -2.

Also, "user notify:" would become "self error:". Modern Smalltalk actually has complete exception handling, so you could also define an exception class (for example ArgumentOutOfRange) and trap it.
The missing back story to Apollo 18!
The reality is that for the majority of obese people, it's about taking personal responsibility for what you put into your body and how you treat it. I don't think it's a coincidence that virtually every time I see an obese person in a grocery store, their cart is loaded with processed foods that are full of sugar, high fructose corn syrup, and few if any whole fruits, vegetables, grains or meats.

People need to realize that just because something says "healthy choice" or "light" on the package, doesn't mean it's good for you and chances are, if it's packaged and processed at all it probably isn't. Obese people don't need to go on starvation diets or hit the gym 5 hours a day, but they should be drinking water instead of soda, and purchasing food with as few ingredients listed on the package as possible, or better yet - no ingredients listed at all because it's not processed.
Until I read this I was more or less pro-UBI but this article makes some excellent points.

UBI essentially assumes that everyone is a rational actor and that they will not succumb to spending the basic income on non-productive things (drugs, alcohol, gambling, excessively expensive consumables, etc). This is demonstrably false, especially if individuals don't have a day job. On an individual level it's easy to say that people should be responsible for their own wellbeing. But as a matter of public policy, it's just plain bad policy.

It's also hard to see how that money would /not/ be extracted in the form of higher prices across the board.

And the main point of the article is a very good one: what happens to all the now-unskilled labour?
“Zero dependency” after you install a 80MB JRE. You keep using this word. I don’t think it means what you think it does. Statically linked C is zero dependency. Go is zero dependency. Copy a binary to the target system and it runs. There’s nothing else to install.
Only 9 million
Firstly, "another possibility" is just one of multiple options, and no claim was made that it is the right explanation. It only needs to be plausible, and evidence of plausibility is easy to come up with.

Secondly, if not trying to to convince someone else, nobody needs evidence for ideas they already believe.

But since you were making a strong claim, asking for evidence means giving you the chance to show that you have convincing reasons for your opinion.

Of course, if you don't have evidence, that's fine, too. Just don't expect to change anyone's mind.
This is a pretty good article.

Centering most of the greatest U.S. cities around the automobile is one of the greatest tragedies we're still living through today.

However, It's not just the automobile that is making us suffer through endless traffic and increased housing costs. The article also touched on the various housing ordinances that were racially charged, and were precisely implemented so that only PoC could not afford to move out of their designated neighborhoods.

These ordinances are stratifying the well-to-do from the poor to this very day.
Thanks, that whole section on "Evolution of aerobic citrate usage in one population" is the most interesting thing I've read this year.
I'm not the OP, but I assume hi-DPI support means that applications scale up their GUI sizes appropriately based on the DPI.

When I use a hi-DPI display (like 4K displays), a lot of old software renders text and widgets too small to see, because they were programmed to display things as so-many pixels high, without concern for DPI. It's frequently a problem with old video games, though it affects regular applications too.
> There are a ton of implicit casts

Very easy to avoid if you're compiling a statically typed language to JS.

> No integers

Not in the JS specification (outside typed arrays), but every JS JIT works in a way you can actually declare variables as 32 bit signed integers, and made its way into the asm.js specification. They are declared like this:

var a = value|0;

Where the |0 is a no-op so not actually done, just a type hint.

If what worries you is precision and not performance, doubles allow 53 bit integers (not counting sign bit) with full precision.

> Say you have a demo page for some language, and someone using the page writes an infinite loop. Don't want the page to crash? Welcome to advanced compilation techniques like CPS transformations and trampolining.

Or just use a web worker, which you can terminate if you haven't heard back in a while (pun intended).

> and any part of the language you target for which you don't fully understand the spec is a potential bug

It heavily depends on what type of language you do. If your compiler tracks the types and doesn't mix them, edge cases are much, much easier to avoid.

Source: I did make a compiler for my own language that targeted JS.
But the moon is one-face, so tidal stress should be constant.
Show HN: JSRobot – A platform game you play by coding in JavaScript
> tangible objects with digital projections

You can also use tangible objects with XR. It might be useful for sorting things, like system subparts, and thinking with your hands. You can fit camera tracking markers on 1 cm wooden cubes.

> you can't touch any of the 3D stuff

The current controller "tock" impulse haptics can be surprisingly effective. Your brain fills in a lot. But no, no force feedback or individual finger haptics is mass market yet.
So, your theory is essentially every culture in every country worldwide has reduced personal discipline? What's the cause of that change?

Just to add, being fat takes significantly more calories than being thin. So, you really need a lot of excess food production before large scale obesity is even possible.
You misinterpreted what the parent said. Whole grains and fruits are not unbound fructose.
Half Measures
Wouldn't it be better to use a cheaper robot and just donate your extra cash to the old people? Is it that you want to compel all other less generous customers to pay for the old people too, and a robot would take away that requirement, which is a kind of tax?

Initially, all the extra money would go to the startup, but with competition, it's the consumers that would save. If it actually works.
I'm inclined to be skeptical of the prospects of this for all sorts of reasons (airport noise, viability of the "all premium" business concept). But they are now reporting contracts with airlines, including nonrefundable deposits, and the airlines that put money down are presumably familiar with all the costs you mention, and probably had someone go over the math.
Embedded Interop Between Clojure, R, and Python with GraalVM
> Binary size for a hello world app means little to nothing.

I'm just quoting the original article. If you want to get mad at someone be mad at the OP. The whole point of the post is executable sizes.
Prior to the advent of the 40% discount bookstores (Borders/Barnes & Noble) they always actually get cheaper over time.

Those stores used economies of scale to make the 40% discount (basically selling for cost) on blockbusters to drive business into the store, with the hope that people would also pick up higher margin items (toys, coffee, etc).

But the more traditional bookstore model was to stock the blockbuster hardcovers at full price, then move them onto discount shelves as time from release went down, until they had to return them to the publisher right before the soft cover release date neared and the books became a liability (as the people that were willing to pay the premium for early access had already been exhausted).

There are still places that have heavily discounted hard covers. The entire business is called 'remainders' and the publishers sell giant warehouses full of hard cover books for pennies that they deem unsellable as they are too far from release date. Soft backs don't go through this process as they are even less valuable, the publishers pulp those, sometimes at a loss.

[edit] another more obvious way to think about this is, why do hardcovers and soft backs come out at different times? If it was just about the 'premium' product vs the lower end one, they'd be released at the same time. But they aren't. They are release about a year different.
Or perhaps navigating the complexities of social groups is a really hard task and requires a more developed brain.
Simplistic counter-argument: At this point, any article needs to mention the environment if we're going to cut back on carbon pollution as much as we need to.
I wonder about noise concerns. The concorde only reached supersonic flight on the ocean, not on land because of the sonic boom.
Whoever chose that name for the company really didn't think things through.
Czech President holds machine gun marked ‘for journalists’ at press conference
It's a problem that can't be stamped out, yes, but we should try to mitigate it, no?
Season 30, Episode 7 (and repeated as Season 37, Episode 1) is "Who wrote the book of Sloyd?"

Available at http://www.pbs.org/video/the-woodwrights-shop-who-wrote-the-...

Also worth noting Season 30, Episode 10 may be of interest as it covers manual training in England. "The Tiny Tool Kit" is tied to Christopher Schwarz's reprint and update of "The Joiner and Cabinet Maker".
Through the Looking Glass (Part 1)
> Just wanna say that my wife has a PhD in nutrition and this isn't news to us.

Does she recommend low fat food alternatives to her patients? My nutritionist pushed them like the gospel. And she would tell us in the next sentence that most low fat foods had added sugar to increase the flavor.
The bundle includes the JRE.
Luckily they can just walk across a couple of open borders to Estonia. Is that right? That must place a cap on how bad an EU country can get since it's competing with the others for citizens.
Slack takes up 1.3 gb of RAM if I don't restart it at least once a week
Ευκαιρία να ανέβει πάλι στην κορυφή η ΑΕΚ
My problem seems to be that there is some significant overlap between the groups, “people who use HN” and “people who are the target audience for self help books.” Worse, are people who can’t cite and instead throw articles into the mix, while being condescending and pseudo-psychic.

Just bury me in good citations and we can both be happy.
It gets a little fuzzy. Go and C are only zero dependency once you have their platforms installed (the OS). The JRE is only a little on top of that, ships with some systems out of the box, and is generally ubiquitous enough that you can probably rely on it being present it over a particular OS being present.

Ita not really zero cost, but neither is an app that only has binaries for an OS you don't run.
I took an extension course at the North Bennet Street School, the historic home of Sloyd in the United States. If you're in Boston and at all interested in craft, I highly recommend it; the teachers are wonderful, and it allowed me to exercise parts of my mind that I rarely do as a software engineer.
I can be, for very small very cheap devices.
I'm sure the airlines know exactly what they are getting. The passengers are going to be the mad ones when they find out they can't afford a ticket. When this happens the demand will plateau for the few high-demand routes that can sustain this price of ticket, and Boom won't get another order past the original 76 pre-orders.
Presumably they’d only do trans-oceanic flights.
I love that a small company is and can challenge the big guys faster flight.

For risks, aside from generally achieving the promised goals is there a big risk Boeing or Airbus copy this and have better sale channels to take over this as soon as the concept is proven. Boom development seems to have happened really quickly. I imagine the resources of the bigger companies can throw with their fiance and general engineer/production systems at this quickly if boom proves the concept.
In theory, slide.com was going to manage its ad purchases using an arbitrage model, so at least in theory, it would be impossible in the long run for us to tolerate this (it would bankrupt us or we would stop purchasing ads from a fraudulent source). This means our risk would be based, at least somewhat, on the length of the impression periods since this would be the period during which an unknown ad vendor would be tested. However, from the point of view of evaluating the model, or adjusting parameters, the period between purchasing a user through an ad and, on average, recovering the investment, is when we are getting our investment back, so everything after that point in time is profit.
"General "Buck" Turgidson: Mr. President, we must not allow a mineshaft gap!"

Astonishingly good movie.
TL;DR - some people on reddit say maybe?
Here[0] is a much larger (2000x1333) image of the letter from an article[1] in The Japan Times for those who love period details like fonts, telegraphic addresses, penmanship, etc.

And the tl;dr:

"Stilles bescheidenes Leben gibt mehr Glück als erfolgreiches Streben, verbunden mit beständiger Unruhe."

translated as:

"A quiet and modest life brings more joy than a pursuit of success bound with constant unrest."

[0] https://www.japantimes.co.jp/wp-content/uploads/2017/10/n-ei...

[1] https://www.japantimes.co.jp/news/2017/10/22/national/einste...
> Google has famously taken a stance on not being evil.

They changed this policy when they got into the business of telling people what to think and control opinions.
Convert Panasonic P2 Footage for Importing to Davinci Resolve
I was at high school (13-17yo) in Australia from around 1990-1994. We had Tech Studies which included three separate components: woodwork, metalwork and plastics. We also did Home Economics which included basic cookery, sewing, etc. Both boys and girls undertook these same classes. From memory, there was one year where this was compulsory (14-15yo or so) and then people interested in more tended to specialise in later years of high school or leave at 15 to take on a trade apprenticeship.

I think school age students would benefit from more subjects like this as part of their formative years, learning basic practical and finance skills.
2.17 MB is still enormous for a "hello world" binary.
Aircraft fuel efficiency has improved by more than 50% since the 1960s. Most people would call that more than "a few percent".
> That a little will can solve this seems obvious for thin people, but it doesn't reflect the reality of weight loss.

As somebody who has lost weight and kept it off for years, I agree that it comes at a price—I need to be conscious of how much I eat every day, and devote most of my calories to relatively "satisfying" food. Basically, it's the food equivalent of needing to live within a budget.

The total cost: maybe 10 minutes a day, and I have to be careful about certain indulgences. And I have to commit to this forever.

Not everybody would find this equally easy, and some people have complicating factors such as eating disorders.

My private theory—based on having "budgeted" what I eat for years—is that a lot of modern processed food is high in calories, very tasty, and not very filling. It can be surprisingly hard to fight this. I guess that this is what some people mean by a bad "food environment."
The site still takes ~20 seconds to load on mobile Firefox. I don't know of another popular site that takes as long to load
I'm curious why UBI has become popular over Milton Friedman's negative income tax. It seems to avoid a lot of the lack of incentive and cost issues.
The airlines know what they are getting and the passengers are going to be the mad when they can't afford a ticket?

This doesn't make sense to me. The airline should have a netter idea of what passengers can and cant afford. Is they are confident enough to order planes, I feel its safe to assume the demand is there.

More importantly I'd like to know what the cost and payment down is. If its $100k you might have many taking a high risk punt. If its $20m you've got some real commitment and confidence.
> Can you elaborate how big the effective political risk is? I always thought LP commitments are pretty binding

The risk isn’t the Saudis pull out. It’s that their investment brings adverse attention from the President, the Congress, aspiring Senators and advocacy groups. A foreign state investor is scarier to most Americans than a foreign private entity.
Something I see on the Xerox Alto and the Mac, but not on Windows, is Column View.

Miller columns are just intuitive for me when browsing a directory structure. I still don't know why Windows hasn't implemented it natively.
YouTube Red or as I like to call it sometimes, because frankly I can't remember, RedTube. <-NSFW
Anyone that writes code connecting a query to some media content is in "the business of telling people what to think and control opinions" whether they like it or not. The concern is doing so responsibly.
Can you explain this more? The ID number can't be treated as identifying information? ID literally stands for Identifier- if not used as identifying, how is it used? How does one identify themselves when getting a loan if not by using their ID?
A New Theory Explains How Consciousness Evolved
In USA, all supersonic flight over land by civil aircraft has been prohibited by regulation introduced in March 1973. [0] Without changes in the legislation, airlines can only offer supersonic flights over the ocean.

[0] https://www.faa.gov/about/office_org/headquarters_offices/ap...
Ask HN: Is it a good idea to spin up a VPS for each subscriber?
My SaaS is going to be priced at much more than $5/mo, but the computation involved is fairly cheap. A $5 VPS from Linode/DigitalOcean is more than sufficient. However, latency is fairly important criteria to my application, so a dedicated VPS (as much of an oxymoron that term is) would be pretty neat.

Is it feasible to spin up a separate VPS every time I get a subscriber? They'd be paying much more than $5/mo, so the cost of the VPS would be covered.
Given the financial risks associated with ICAO's commitments for carbon neutral growth of the industry, and potential impact of current and future national/supranational emissions trading and carbon tax policies over the expected lifetime of a plane that's not going into service for a few more years yet, perhaps it's quite relevant even from a business-focused perspective.