skysight-inc/HackerNews huggingface dataset:
As a pure fiat currency Bitcoin has neither intrinsic value nor an invested community of users, which makes the value proposition very risky. If a cryptocurrency did start to become useful for mainstream use, everyone who isn’t heavily invested in Bitcoin would have a strong incentive to use something else where they could capture the profits which would otheraise go to the Bitcoin early adopters, and if that starts happening the floor for BTC is zero as everyone cuts their losses and moves on. Yeah, there’d be some HODLers trying to recruit users but that’d die off over time since nobody new would have that sunk cost.
I think in this case there's so much "prior art" that the patent would be invalidated at the first challenge.
The hardware is described, vaguely, at [1]. It's a rotating drum scanner with 16 or 64 lasers. $12,000 for the 64-laser model. $24,000 for the upcoming model with 200m range. Still a long way from a useful auto part.

There are about a dozen companies in this space now. Nobody has the price down yet. Continental, the European auto parts company, is the most likely winner. Quanergy made a lot of noise but didn't ship much.[2] There's a conference on automotive LIDAR this month in Detroit.[3] Many of the exhibitors are major semiconductor packaging companies, with various approaches to putting lots of little LIDAR units in a convenient package at a reasonable price.

[1] https://www.ouster.io/faq/
[2] https://news.ycombinator.com/item?id=17755183
[3] http://www.automotivelidar.com/
There is no doubt that as the technology advances it will spil over to the civilian umm... "market". A truly terrifying prospect.
What do you use for indexing/searching pdfs? I didn't think about that even being a feature for something like mediawiki, but I guess that would make sense.

One of the big features I like in Evernote is the ability to search pdfs and images. I have a lot of technical manuals that I save, along with receipts/etc that are easier to search for.
I heard people were switching API-Gateway out with AppSync (the GraphQL alternative), which allowed them to remove a huge amount of HTTP-bound Lambdas and simply let AppSync manage that part of the stack.
>I think typescript is popular because it’s very java/c# like

I think at beginning it was mostly used by developers familiar with Microsoft stack (.NET world mostly). But TS was not designed for C# developers, it was designed for JS ones! And I'm super happy it's becoming more and more popular in more "mainstream" frontend community.

I'll just copy my old response to some very old thread that talk about why it not just "a language for C# developers":

"
Once sometimes asked me "Isn't Typescript a language for C# developers that don't know JavaScript" It's unfortunate that people think that TS is similar to C# just because it came from Microsoft. Flow language is like 80% similar to TS, but no one says it's similar to C#.

TS is just JS + new features from future JS specification + optional type system. And optional type system is fundamentally different than the one in C#, and it was designed to fit well with JS patterns and idioms (structural vs nominal type system)

If you look at TS code that looks like C#, it's because JS looks like that (classes syntax, classical inheritance, lambda syntax - it's all ES7 (or ES2016/ES2017, or whatever it's called now)
"
Theres a difference between sometimes poor popular science reporting and outright plagiarism though.
Makes Kim Yong Un look like a minor nuisance.
I'm not saying this is illegal to spread, but I'm pretty sure having this kind of technology is at the very least questionable in some jurisdictions.
I really enjoy SE, and I just found out about these corrections. Not really sure what to think about them but for trivial things like to-day I don't really see the point of correcting it since it's obvious to understand and gives some free authenticity. Just my 2¢; thanks for the project as a whole.
When looking for malware and especially virus source codes for research purposes, you shouldn't miss the (sadly offline) VXHeaven library [0] and any ezines of VX groups [1].

[0]: http://83.133.184.251/virensimulation.org/src.html
[1]: http://spth.virii.lu/ezines.htm
And most of it will probably burn up at reentry, although some of it will fall into the ocean. Isaac Arthur runs over all the options to prevent this from even happening in his Upward Bound series, eg. automatically breaking up the cable in parts by blowing fuses and having parachutes on all the parts to slow them down.
I'm not either, but I think there's no reason for them not to charge a lot of money. I expect goal is to advance their tech as rapidly as possible while claiming mindshare. The people buying this stuff are generally swimming in investor money, perceived value is often related to price, and it's much easier to lower prices than raise them. So as long as they're selling enough units to get useful real-world feedback that supports their development, in their shoes I'd basically gouge people.
Can you guess which psychology experiments replicated vs. those that didn't?
But almost anything is better as money than the Bolivar. Gold coins. Dollars. The Mexican peso. Chunks of coal. Eggs. Kalashnikovs. Laundry detergent. It's not exactly an exclusive club.
My favourite Space Elevator concept was from the Halo franchise.

There would be multiple elevators on the continents of the planets that were tethered to orbital platforms.

They didn't seem to survive the covenant well

https://www.youtube.com/watch?v=wfU524OBKhc

http://halo.wikia.com/wiki/Space_elevator
For practical purposes the atmosphere ends at 500km altitude. The cable is going to have to be 36,000 kilometers long. Atmospheric effects are pretty much rounding error at that point - imagine trying to swing a 10 foot long pole by blowing on the first inch.
'Thank you for serving your country' -> Thank you for putting your life on the line on a geopolitical chessboard where American interests and lives trump those of the locals and where 'collateral damage' is entirely acceptable as long as the troops come home in one piece.

Keep in mind that the only thing the Iraq and Afghanistan wars have done is to create many more terrorists and destabilized a huge part of the world and left the rest of the world to absorb the damage done.

So, no thanks for serving your country from me. This is not WWII where there is a 'good' and a 'bad' side, it's all one huge clusterfuck of special interests, commercial interests and good old empire building rolled all into one, to be abandoned when the cost turns out to be too high leaving a power vacuum which then is filled by local strongmen.
It actually doesn't need to be, like, flashy 3D game stuff! It can just be a 360-degree screen-space that lets me have every file in the system open at once. The problem with pairing in 2D is there is only one cursor, and even if there were two cursors like google docs, there is not nearly enough screen real estate for us both to work at the same time. These are mostly 2D problems, but VR still solves them.
Feynman's Rainbow: A Search for Beauty in Physics and Life is a good read: https://www.amazon.com/Feynmans-Rainbow-Search-Beauty-Physic...

Minor spoiler alert.

Feynman had a strong dislike for string theory, even going so far as to shout at someone "I don't want to talk about string theory!" Presumably, Feynman could sense that this kind of "search for beauty" was against empiricism. I always found it interesting that even back then, when empirical observation seemed to rein supreme, there were those who eschewed it and searched for meaning beyond what nature presents to us.
I've never actually heard of upspin before this thread. Their homepage doesn't give a clear view of what it actually does, but I'm looking over https://upspin.io/doc/overview.md now
Or due to plasma double layers?
Really off track, but I don't think iPads were a thing 15 years ago. (You can reply with “Exeunt”.)
> I had considered a second referendum politically impossible in the sense of acceptance by the polity.

I agree in principle. That is what should be.

I believe that we live in dangerous times. The political centre (e.g. labour & tories in the UK) is in dire straits in Europe and the US. Any action that puts strain into the democratic process, I'm afraid will be in advantage of the misanthropic, xenophobic warmongering groups. I'm afraid a new referendum might catapult the UKIP from ~2% to 5% or 10% turning it, much like the AfD, the third political power in the UK. Might sound a bit out of touch now, but historically, will not be the first time something like that happens in a country. What fuels these changes is the delegitimisation of existing democratic processes and organisations by those in position of power.

Democracy is a fragile flower. Takes months, sometimes years to grow but seconds to destroy.
That's really the question. How do people in Venuzuela even buy Bitcoin? What do they buy it with? Nobody will swap Bitcoin for their Bolivars, since (as we've decided) Bitcoin is better money than Bolivars.
I mean, that's the standard cya on various hacking forums since forever :)
Same for Belgium.
http://www.orbitalvector.com/Orbital%20Travel/Space%20Founta...
Shameless self-plug: Play 2048 in the kernel - https://github.com/Mic92/2048.ko
Jacques, this isn't appropriate behavior on HN.

I probably defend you more than anyone else on Hacker News because it sticks in my craw to see you targeted for the crime of being high on the leaderboard. But your position on the leaderboard in no way makes these comments pass muster for the HN guidelines.

It's an ugly personal attack.

Maybe take your political opinions to your well trafficked blog and vent there. But it isn't acceptable here. The guidelines do not say "Unless you are on the leaderboard, and then feel free to do whatever you want."
Gun Ranges Get Put in Facebook Jail; Is That a Free Speech Issue?
The first thing I do in a new CRA-TS project is make the tslint.json rules default to warnings instead. Or just disable them completely. After that, it's great! I'm actually surprised that they still haven't loosened the rules after Dan called it out a month or two ago. Seems like an easy enough fix to at least make them warnings until they choose better defaults.
Having used Oracle's PL/SQL, I can't really see a use case for this kind of language. Your application logic should be kept within your application, not on your database.

The exception to this of course being unless your application is already on your database.
Depends on age and cultural background. When I deal with non-technical folks of various ages, there's an OK (but not great) chance that they've read some classic literature that I enjoy. Unfortunately a lot of those were forced readings in high school, but it definitely depends on the individual.

As much as I love Star Trek (particularly TNG), I'd say it's far, far less popular among folks in their early 20s these days than the classics. Probably why they're called classics :)
What's crazy to me is that clearly, the Bay area's housing problems are just a symptom. If you have a hard time finding affordable apartments, think about all those that have been displaced by exploding prices. Rent rose, food prices rose, services rose. Everything is pricier. Look around the streets and it's clear gentrification, combined with a lacking social net, has messed up a lot of people's life. But SV startups are looking to hire people to commute and sit in chairs, in office.

I've been working remotely for years and I make a point to respond to each recruiter contacting me. I'm not really looking for a job, but I'm just trying to collect data on remote work. So I try asking if the opportunity is remote. It never is.

All y'all's Silicon Valley startups want people sitting and warming up seats in your SV offices. The argument is always "to foster company culture", which I guess translates to Friday evenings playing with Nerf guns. Which I guess is more important than things like not contributing to local social problems.

The dichotomy is so weird. They want to change the world in some weirdly contrived way. But there's no way in hell this can be done if you don't move to SF to warm up their chairs. Too bad for the rising housing market.

Last week, a video chat startup that doesn't do remote. Seriously. Anyways... If your company culture is held together by Nerf guns.
By 1995, the web had clear and significant business value. Online commerce was rolling, access to information and services was driving a big rounds of investment at all sorts of companies, ordinary people were starting to use things (news, forums, dating, fantasy football, etc.) on a daily basis, etc. That was despite computers and network access being very expensive and horrible by modern standards – remember dialup and navigating at 14.4k?

In contrast, we’re a decade into blockchain hype, adoption is far easier than getting online was, and yet the only reason most people know about it is ransomware, drug purchases, or speculation. The number of people who have any need to use it on a daily basis is still a tiny fraction of the population and only the speculators would be inconvenienced if it suddenly stopped working tomorrow.
why a downvote for asking this question? is this a bad question or something? is this rude or offensive to someone? not quite sure...
Unfortunately I think you have it backwards. Some people just really, really like to fight, and to purge heretics from the group of pure believers. It also doesn't help that the smallest misstep is sufficient to switch one from "pure believer" to "heretic" in the blink of an eye.

I'll go ahead and link the famous "whale cancer" article from SSC: http://slatestarcodex.com/2014/06/14/living-by-the-sword/
looks like a leaf in the wind to me or perhaps a small bird.
Relevant discussion with some comments from Angus on reddit: https://www.reddit.com/r/SelfDrivingCars/comments/9c60pe/the...
Yeah. Summarize and Anki. Otherwise you are just collecting.
Oh, I don't have one. People confront me often - "what will you do in an emergency?!"
I think Linus mentioned something along those lines: on how the work on using Linux for supercomputers was the foundation of Linux for phones. It's a point Tannenbaum makes in Modern Operating Systems: what is old, is new, and what is new is soon to be old, as the bottlenecks move, ideas that were abandoned get resurrected.
I don't need you to tell me what is and what is not appropriate behavior on HN or elsewhere.

The only person monitoring the leaderboard is you, I don't give a rats ass for votes, up or down and could not care less about you coming to my aid because I do not need it.

As for personal attacks, what you are doing here is a personal attack.
Presumably the price is currently dominated by the effects of low volume production. The market is r&d for new products. When those start going to mass production, then this part can also go to mass production, bringing the price down.
I don't understand a lot of that article. I recently read about the Planck temperature, beyond which the material would emit radiation smaller than Planck length, and which is therefore sort of an upper limit of temperature beyond which we don't know what would happen. For the Hagedorn temperature, it says that beyond this temperature, things will turn into "quark matter" (linking to another article explaining that this means "any of a number of theorized phases of matter whose degrees of freedom include quarks and gluons.", which isn't very helpful), but not why that would happen. I don't understand why beyond this point, matter should suddenly turn into other 'theorized' particles.
I did a similar thing with 1010 a while ago: https://github.com/trosh/1010

These projects are probably useless but very fun to make and contribute to if you feel like practising. Some stranger actually contributed to my rushed 1010 clone, it was the best feeling ever.
Delaying the roll out of algorithms if they achieve superhuman performance in avoiding accidents might not be the moral high ground...
The overestimation is in whether a company should be using s3 as an operational standard.
Why Continental?

Flash lidar seems to be a fundamentally broken concept to me wrt range.
Here’s a explanation of what inelastic demand is.

https://www.quora.com/What-is-the-meaning-of-perfectly-inela...
I'd pick Max Richter. His Sleep¹, which is nearly 8.5 hours, would be a good start.

1: https://en.wikipedia.org/wiki/Sleep_(album)
Specifically the change in the default to escape strings and having to specify when you want to pass it through unsafely (html_safe / raw). Broke a lot of v2 apps, but ultimately I think it was definitely the right call. Same thing again when strong_params become the default. So mostly due to security improvements.

v2 -> v3 also was the merb merging and a pretty significant rewrite, so it's pretty impressive that we didn't have even more trouble IMO.
> The action on my part on Coinbase was basically transferring / sending BTC to an external BTC address

Oh, so it did involve a Bitcoin address. You're right, I don't think they tried to find each other through metadata to settle it outside the Blockchain. That would be dumb, plus the inconveniencing 20 minutes is consistent with that.

It's great to see examples like this in the wild. I've been hearing lightning is getting greater usability and traction as well. Interesting times.
This may be true while searching for product market fit, but once you hit a certain (small but stable) size, your ability to identify what your existing and future customers currently want, and will in the near to mid future want goes up.

There's a difference between future proofing to be able to deliver a roadmap or using your market research to get the next X customers and trying to guess at what some as yet unknown market might one day want.
Each unit has 16 or 64 little laser rangefinders in it. They all have to have uniform response (which, from their pictures, Ouster hasn't achieved yet) and be lined up properly. Eventually somebody will develop high volume ways to do that, but in the prototype stage they're probably hand assembled.

Image orthicons for TV cameras once cost $10,000 each, and color cameras needed three of them, plus another $50K or so of electronics to drive them. Today a cell phone camera costs about $10.
fiat isn’t synonymous for government: it just means there’s no value except what people agree upon. That makes Bitcoin a pure fiat currency which is especially volatile because there’s no inertia from demands that, say, taxes be paid in it or that civil servants and government contracts use it.
Take a look at the game Claybook. Fully raytraced visuals at 60fps against a dynamically updated SDF scene representation, complete with fluid sim for the main game mechanics. All on current hardware, including stuff most people consider “slow” these days (Xbox One).
Uber's revenue in 2017 was 37B with losses to the tune of 4.5B, Daimler's revenue in 2017 was 167B and recorded about 10B net income. Lyft's revenue was 1B in 2017, also burning money.

Math doesn't support Uber's or Lyft's case, but you never know.
Yes, I agree with you that a portion of the value assigned to virtual currencies ( the IS value ) comes from the utility of the the thing... just like a portion of the value we assign to the U.S. Dollar comes from the utility ( you can carry it in your pocket and exchange it for stuff )... but understand that just like the dollar, we assign value to it because it's HARD to counterfeit ( and only because so ), you can't just make as many as you want easily.

Bitcoin, and most other virtual currencies, are only "hard" to counterfeit because limitations in current technologies ( math included ) make it so... What happens when that goes away?

What would the value of bitcoin be tomorrow if some scientist today, publishes a paper providing an easier way to factor large numbers? What about Moore's law? What about quantum computing and machine learning? What about breakthroughs in mathematics or cryptography? Start thinking about all the intellectual manpower working every day on any number of things that could make the very basis for bitcoin obsolete, and you start thinking that maybe the value we assign it is a bad bet.

As far as gold goes, until someone creates a philosopher's stone, or starts 3d printing gold atoms, I think we're safe to assume you would still have to mine the stuff and refine it, and that amount of work isn't going away anytime soon... and therefore the "value" of it isn't going to zero soon either.
Ok, that makes so much more sense. Thank you. If it were in the 10-trillion K range, we would probably be in the regime of hadron dissociation. I say probably since the quark-hadron phase diagram is still less a precise piece of work and more a ... rough sketch.
Part of it is legacy but also, interactions with an RDBMS are often stateful so it's useful to have a session (in which such things as transactions can live, etc). I'd guess there isn't much reason to change this because there are standard and effective workarounds that just haven't yet made their way to things like lambda.
I don't think it is an attack on you. You seem to have some personal issue with me and you have accused me of sticking the knife in at any opportunity. This is not true. I also defend you.

For the record, I have a lot of respect you. I don't care if you believe that or not. From what I gather, someone has your ear and is filling it with lies about me. I've given you a lot of latitude in part because of my high personal regard for you, but I'm not attacking you here and I'm not obligated to tippy toe around you or something and defer to your opinion or something because of whatever your personal issue with me is.

I will make a note that you aren't interested in me defending you and try to restrain myself in the future when I see people behaving inappropriately towards you. I'm not the moderator here. It's not my job to moderate the space. But I am a member and folks do make "meta" comments at times.

I'm done here. I don't intend to reply further. This is not productive.
Simple systems are easy in nearly every dimension (extension, debugging, performance), and they are at natural odds with the state of affairs. There are hoards of programmers waiting to do a tech debt driveby to "look good" for having bolted a feature on in minutes to days.

Simple systems require extreme vigilance to remain simple.
Are the books supposed to work with Kindle Paperwhite? I am trying to email it to my account and Amazon is saying that it cannot be converted. Super cool project!
I saw a bunch of people throwing out good sci-fi space elevator examples and had to drop a reference to the space elevator in Neal Stephenson’s Seveneves. The descriptions are epic and do a good job of giving a real sense of placiness to the result of truly enormous engineering.
Same concerns here. I've read so much theory on event-based architecture and CQRS, but the examples are rarely applied to user-facing web-app scenarios. Back-end technology should never dictate UX imo.

We're building a user-facing app from scratch - the plan is to start with big coarse grained services, and just use REST for service to service communication when a user is waiting on the line.

But of course favor breaking up the services so there's no communication required is the first preference, and queue-based where it makes sense is the second preference.
> You seem to have some personal issue with me

I notice you mixed yourself into this thread unasked.
Another version of the Euthanasia Coaster?
https://en.wikipedia.org/wiki/Euthanasia_Coaster
Any chance to open source and have a look? Thanks!