skysight-inc/HackerNews huggingface dataset:
> There is a rather large difference between how you do interfaces for people with training who are experts and the amateurs that Robinhood is targeting.

But regulation requires that you do self-certify as (to a certain extent) an expert who understands the more sophisticated product in order to trade it.

I suppose I don't disagree that they're targeting people who in many cases probably shouldn't be passing that screen, but I suppose I think that's the problem, rather than it not being dumbed down enough.
Schwab, TD Ameritrade, and Fidelity all now offer commission-free trading
Sorry, but that's just ridiculous. Obviously the language can't prevent you from defining your Option type incorrectly. The point is that it's not possible to misuse it.
No? A big player might decide to preemptively squash ANY startup that could possibly become a threat while it's cheap and nobody else cares enough to notice.
In early days of twitter, they used to go down almost everyday and showed failed whale.

Every day media covered news that twitter went down again and thus creating more publicity resulting in more users.
> Corporate action in 10 years by a company that encourages the disuse of public transport.

I don't understand your point here. Lyft also discourages car ownership. What should any of this matter? Why does it matter what their customers incentives might be when discussing their corporate climate action? Are you stating that lyft is bad for the environment and climate change overall, and would still be bad after this change? I just don't get how these things are related.

> News cycle: Uber/Lyft volume is very low. Get in the news and get folks to start using Lyft as restrictions end. "we are good, we are saving the climate"

People are just desperate to get out and do things. I don't think that lyft making headlines online or on TV is going to matter much for that and I don't think their marketing department would think so either. This sounds like a conspiracy theory that Lyft does not operate in good faith and is rather trying to trick everyone all the time. It just seems unfounded and weird.

> What's the meaning? Is it binding? Is it legal? Or is it just words that they can walk back at any moment for any reason or just forget the made this claim.

I'm sure it is binding. If they do not make strong efforts towards meeting these goals, surely the shareholders would sue? I would!

> It's not name calling; I'm pointing out this is fluff and pretty much does not mean anything.

"big fat nothingburger" is the definition of name calling and rude behavior. It just doesn't belong here.

You also didn't address that there is literally 0 excitement here. There are 0 comments that I would rank as any level of "excited". I don't want to accuse you of lying, but, can you source what you mean by "excitement here"? It just doesn't seem real to me.
> As far as I can tell, they never had support for finding usages across packages, never had support for finding implementations of an interface, never had support for finding what interfaces a certain type matches/implements. These are basic features in any IDE for a language that has packages and interfaces.

I suppose it depends on what you're used to. I've never found myself wanting to do these things, but I'm also strictly from a Python and C++ background so my standards are admittedly lower than Java and C# people. Hopefully gopls solves for these problems.
Have you considered a KVM switch? I really like mine. It allows up to four computers leaving me with two extras that sometimes come in handy (plugging in someone else's laptop or sometimes I connect my Raspberry Pi on).
Beware of JSON Fields in SQLAlchemy – Adrià Mercader
I don't frequent /r/wsb, but the onus should not be on the SEC to clamp down on a community, it should be on the service the "significant young people" are using to execute satirical investment advice.

For example, if Robinhood wants to gamify everything, then advanced trading opportunities should be part of some built-in experience-based level up system. E.g. you can't trade options until you have made X classic trades, or after you've completed X days of simulated advanced trading.
> The idea that a business needs a moat to be profitable is a problem endemic to business.

I'm pretty econ-left philosophically (socdem short-term, mutualist/ancom long-term), so you can't get much argument from me here. :)

But I want to steelman the other perspective: so long as we live in a pre-post-scarcity market economy, having some kind of moat is part of how one gains bargaining leverage in a price negotiation. (Think of "moat" in this context as influencing cost/benefit incentives, rather than an absolute barrier: the customer could build a boat to cross it, or they could pay the toll to cross the bridge, with the latter being usually cheaper.)

One answer is as you describe: hosting services and support contracts, in a market ecosystem of interoperable commodity services. Sign me up! But: such an ecosystem has a free-rider problem when it comes to the non-trivial expense of creating and maintaining the client software (including the risk of front-loading the 0-to-1 effort of building it before you know it will be adopted). In a FOSS model, other players in that ecosystem can obviously contribute to that effort, but those who don't contribute will have a competitive advantage, since commodity markets tend to viciously compete until margins are as near-zero as possible.

There are "moats" / competitive advantages that have nothing at all to do with the software itself: superior support experience, brand reputation, efficient hosting services through economy of scale. So I don't at all claim your model is unworkable, and there are many successful companies who do just that.

I don't disagree that the world would be a better place (and the overall economy perhaps more efficient), if most/all software was FOSS, and business models required less centralized control. (Note that nothing has stopped us from a building a pure FOSS E2EE VC client with a comparable feature-set; we still could.) But say I'm a board member or an investor in Zoom, whether pre- or post-success: how would you pitch me on the business value of open-sourcing the expensive-to-produce client software?
I shall be giving $100bn to charity in 2030. It will be a great year.

...srs, this is The Michael Scott Foundation. Admire the balls but everyone knows that Lyft have no control over this (I am sure they would do this today if they could, but the issue is that no-one has electric cars...not Lyft's failure to make this pledge).
Tell Me What to Eat
What Warren Buffett gets right (and wrong) on post-Covid-19 investing
I’ve used johntheripper for wordlists and hashcat for brute-forcing, but the ethos might have changed.
If someone bought a car to use for Lyft, they are probably driving full-time. Full time drivers I've spoken with go through cars a LOT faster than 10 years. Some don't even make it to the 3 year mark before needing a new car.

Lyft and Uber have always had requirements on the maximum age of a vehicle too. I don't think any car on the road today will be eligible in 10 years anyway.
Those are all really good points. I'm interested in hearing more about the NTFS quirks - what kind of issues were cropping up?

Now I'm really curious what filesystem Snowball wound up standardizing on, and how/if file metadata/ACLs/alternate data streams are maintained.
Effective Covid-19 R0 estimation for California and other US states
Wikipedia and Wordpress have massive reverse proxy caches in front of their PHP servers. Those servers are the ones that handle most of the load.

99% of users only read articles and blog posts, which is content that can be aggresively cached. If the workflow was not as cache friendly, they would not be using PHP, for sure.
I'd blame the marketers. He should not have felt comfortable making trades at the scale of hundreds of thousands of dollars even if they netted out to a small amount.
DataRobot Acquires Boston Consulting Group’s Source.ai
For more context, see posts on most of the gold medal solutions:

https://www.kaggle.com/c/abstraction-and-reasoning-challenge...

In short, a combination of hand-crafted DSLs and search got most of the gold medals.

Also notable is that ndividual teams managed to solve 49 tasks in total between them which is almost half of the 100 test tasks:

https://www.kaggle.com/c/abstraction-and-reasoning-challenge...
Actually, castles almost always had back doors.

https://en.wikipedia.org/wiki/Postern
I would pay money for a feature like this
Top Impressive Real-World Applications of GANs
Department of Justice’s Review of Section 230 of the Communications Decency Act
A Data Engineering Perspective on Go vs. Python (Part 1) – Christian Hollinger
Where will you get water?
China to prioritize Africa once Covid-19 vaccines are ready
The Day-Trading Pandemic – Wealthfront Blog
Hoods are for reducing reflections on the screen. They are functional, and are not (at least originally) a “gaming” feature. Somewhat common on high-end color-accurate displays. How useful they are depends on the lighting.

The monitors linked are actually quite good, the gaming styling they have is rather unfortunate.
I use one and have it setup at a 2/3 split, it's wonderful
Why would it be zero? Seems like he sold a credit spread. One leg can be exercised which means it gets converted into a large equity position, which will then be offset by the other leg being exercised by the broker when they get around to it.

Since it's a defined risk trade, you can easily sell a large number of contracts which can result in very large stock positions when exercised. It's not an issue, the math works out, but it's something you need to understand before making the trade.
I don’t claim that the balance of supply and demand has no bearing on prices and terms. That is clearly a straw man.

I agree that the balance will end up with some stores with reduced fees. Perhaps they will all be forced down to 15%, but you if you are denying that those with greater reach will have pricing power, then you are the one who is going against every single historical example of how markets work.

However unless there is another monopoly outcome - I claim that the result would be utterly destructive to independent developers.

You have now posited the requirement to support as many as 8 stores. That alone will easily offset the benefit of paying 15% less in commission for small developers.

Every app release will be more expensive, and that ignores the fact that the overall system will be less efficient, since every release will result 8 separate app reviews, etc.

Commissions will go down, but costs will go up.

All the benefit of the lower commission environment will be transferred from independent developers to larger corporations for whom the cost of releases is a smaller percentage of their total.

It’s also worth pointing out that Android already allows alternative stores, and yet Google somehow manages to keep charging 30% for the play store, and there are no common alternatives in the US.

How can your theory be correct when this clear counterexample exists? For that matter why hasn’t Google just reduced the commission to 15% or even lower to induce developers away from iOS? Surely they could have done so at any time.
If you're trading in small amounts, the comissions add up pretty quickly, a $10 comission on a $1000 purchase of stock ends up being 2% of the price, considering you have to pay to buy and to sell. That's way better than a $30 comission from the before times, but it's still big.

That said, we can all thank RobinHood for driving comissions down to zero, and then do business at brokerages that work. I personally wouldn't trade at IB, because I only do a tiny amount of trading, and don't want to go into the rabbit hole of individually routing my orders; it's great that it's available, but I don't need that, nor do I want an API or stuff.
> Recently, pictures of TSA master baggage keys got leaked by the Washington Post and also PDFs hosted on TravelSentry's Website.

I'm glad we don't need to trust the TSA with following any kind of security protocols. /s
This is sad. If the report is correct, Robinhood might be negligent here. I don't know if there's security law required, but Schwab has 4 levels of option tradings [0], and you'd need to apply and get approved. I've investing/trading for more than 10 years now, but they've only given level 0, and rejected my level 1 application. It seems this guy's trade is at level 2.

[0] https://help.streetsmart.schwab.com/pro/4.36/Content/Option_...
You gotta love that weird segmented memory model though, to allow it to address up to 1MB of RAM using 20 lines, combining a pair of 16 bit registers to generate the 20 bit address. The Motorola 680x0 was a bit saner.
Since this post is illustrating the use of generics, why not go all the way with the get implementation to return an Option[V] type? It's a natural thing to do here. The return type is already a kind of sum type: it's either the value you want (non-zero value, true) or it's not (zero value, false). If the implementation uses the optional type, it'll become impossible to write code that uses the zeroed-out returned value incorrectly. Calling code must always explicitly check the returned Optional[V] value to access the value of V and continue or to perform some code to handle the not present case. As it stands, it's very possible to ignore the 2nd returned boolean value and write code that'll easily break.

Now, I can see why the author would _not_ want to do this, since this "explosion" of sum-typed things is present in all go code (e.g. the err := ...; if err == nil { ... pattern). So, it might be easier for Go programmers to see how they could use generics in their own code by re-using this pattern. However, I think this is a disservice to why generics are an incredibly useful construct in programming languages. They can be used to align code more closely with the semantics that the programmer wants to convey.
I was looking for small screws and I didn't find as small as small carpentry nails. In addition, this plywood is very delicate and I am afraid that the screws could damage or delaminate it.
Bold of them to assume they will still exist in 2030
I believe there was a race at that time, physicists knew there was a need to generalize SR to non-inertial frames, and that perhaps that it involved metric spaces (following the lorentz transformations). Hilbert was working on it, but apparently did not make much progress at deriving the GR equations (I don't have a source, sorry -- scattered articles on GR). You're right that eventually he or someone else would have made it, but how long would it take is speculation.

Edit: More information here https://en.wikipedia.org/wiki/Relativity_priority_dispute

I think the main takeaway is that Hilbert and Einstein ended in amicable terms, and it seems both contributed greatly to eachother's result.
A school board paying for an auditorium is a thing school boards normally do. Don’t you think it’s a little weird to have energy extraction on that property too? I do.
iOS 13 is supported on a 2015 device, the iPhone 6S
Indeed, some comments here are ridiculous. They are a company, they want to earn Money. Contrary to what people might think, just because a company tweets they support the BLM movement, that doesn't immediately mean(in fact, it almost never means) that they're genuinely interested in being benevolent. Stop being naive.
> Personally, I'm not feeling comfortable using Zoom on my PC. Just the other day, when opening the app, I was given a warning that the security certificate was untrusted and I would need to trust the certificate to proceed.

I mean, Zoom's atrocious security record aside, mistakes do happen. Microsoft recently forgot to renew some certs for Teams that caused a lot of trouble.
I sometimes wonder if AWS product naming is driven by more than just cuteness or habit. Obscure names and acronyms could be an intentional strategy to tie users to AWS.
So we should try your service just because you say you won’t lie? What do you think of this white paper anyway?
Holy moly looks like a lot of knobs and buttons!
Expanding our support for Black founders
There are multiple vaccine candidates that have passed phase I trials, have demonstrated they produce antibodies in humans, and have demonstrated they are successful in animal challenge trials. The chance's are good that we have a working vaccine by end of year, and the chances are very good that we have one sometime next year.

In the unlikely event it turns out that we can't develop a vaccine in the near future, we'll have to just deal with the disease long term. If we try to keep the world economy shut down for more than a few months at a time, we'll kill more people than COVID would. And as other people have pointed out, college students are very low risk.
NGBoost: Natural Gradient Boosting for Probabilistic Prediction
Don't know why you're being downvoted. Whenever I've successfully explained how Google works as a company, with even the most favorable tilt while still being honest most non,techies see it as you describe.

And like it or not the non jargonated users outnumber the jargon filled by many orders of magnitude, and they don't tend to react favorably when people talk out both sides of their mouth unless there id's something even more dire at stake.
There's only one context, you can't misrepresent the market.

You also sign a lot of paperwork stating that you understand the mechanics and risks of trading. There are several levels between buying stock and selling options that you need to ask approval for.
Nope, this is human nature at it's most basic and obvious.

Saving face by not admitting egregious mistakes and even lying about making or not making them even after the evidence is public and irrefutable is just the human ego defending itself.

I'm starting to get past taht sort of childishness in my own life but having lived it for a long time I see it easily in others.
Yes, but you have more fingers and toes than that!
He definitely fits my description :)
Baddies will sometimes do big DDOS’s of a public site to showoff their botnet’s capability. That clout is then used as proof to sell their service to customers. I could see this being an instance of such a thing.
Astounding strategic play from YC here. Start up School has become popular enough to be viable as a social network. Imagine a VC having a live and data rich directory of most investment hungry early stage tech startups where that startup has shared its progress from the earliest stages of its development. What an incredible advantage that is as a VC firm. Even though I love YC, I find that idea quite worrying.

I've been through SUS and I really valued it. It's great content and some of the discussions were really valuable. I think it's fair to say, though, that the content is very opinionated. I understand why - it's trying to prepare people to apply to YC and YC have a particular way of doing things. I think that's fine. My worry is that the reach of YC on the broader tech start-up culture is so broad now (and getting broader) that these opinions and ideas become broadly accepted norms. When that happens, people stop recognising the fact that there could be a choice to make and we loose the diversity and richness of other opinions and ideas.

Here's an example: everyone knows that the only place to incorporate a company is in the state of Delaware. Creating something in your local region is out of the question, not because you've reasoned well about the pros and cons but because the culture has a generally accepted answer.

I think if we don't have diverse views and perspectives on what's possible and what kind of companies we should be creating, we'll end up with more of the same. That's a winning formula for YC but a bad one for culture as a whole.

We don't need one VC that dominates the early stage market. We need competition to keep the ecosystem healthy. Maybe what we really need is the other VCs, bootstrappers, open-source foundations and NGOs to get into the startup education/social network business too.
I turned off political Facebook adverts by simply uninstalling the app and never using it
It seems to me they have a way to do E2E without sacrificing quality with many participants.
Anyone in the automotive space that says "by 20xx" can be essentially immediately discredited at this point. You can blame Google/Waymo for saying self-driving cars would be available to the general public by 2017.
John Bolton: The Scandal of Trump’s China Policy
Right. For consistency, the old built-in generics should be written

var v chan(int)
var m map(keytype,datatype)

instead of

var v chan int
var m map[keytype]datatype

but, for backwards compatibility, that probably won't happen.
Thus, cruft.

Map was always a bit too special in Go. Channels really are special; the compiler knows quite a bit about channels, what with "select", "case", and "go" keywords and their machinery. But maps are just a built in library object.
They're likely just pulling the video from youtube in which case they're limited to the videos available for that city that have been uploaded by other users, so that may not always be possible for all cities. They're might also be differences like the route taken.
How effective is 'parasite SEO' for ecommerce?
One more step for ML. It used to be that we needed hand designed image features. Now we can learn even the image priors (spatial locality and translation invariance) from data.

Transformers are basically learning relations between pairs of input tokens, moving the problem to a more abstract level than predicting directly on tokens. While CNNs excel at benefiting from those two forms of invariance, transformers have permutation invariance, they can predict on sets, graphs and non-euclidean spaces.
I wish it was true. Every meeting at my job requires Zoom.
A phone company doesn't have algorithms that decide which calls go through and which don't, or which calls are marked as important and which are not.
That was an excellent read. Thanks for sharing.
> Well it turns out that if you produce a quantum field theory for gravity, it is not actually possible ...

I heard about that. But why would you want to have quantum field theory of gravity? Why can't you just consider gravity to be only about the shape of space-time in which everything including quantum field theories of everything else happen?

> Well general relativity (GR) and QFT both describe fundamental interactions ..

Does GR really describe fundamental interactions? For me it seem that it only describes shape of space-time where all the fundamental interactions take place.

> In cases where gravity is very strong though we do have these issues as we just don't know what happens due to lacking a proven theory of quantum gravity.

Isn't it just because we lack data from systems where gravity is extremely strong and systems are small/isolated enough to show any quantum effects? How can we be sure that we need quantum gravity? Why it's not enough to calculate QFT in curved spacetime instead of flat spacetime?

> One example is how the matter behaves in the super-dense core of a neutron star, known as the neutron star "equation of state", which is currently unknown, as in these cases both quantum and gravitational effects are very strong.

I see.

> Yes that is completely correct to our understanding, but we could maybe model it as a "real force" by writing a quantum field theory for it

Apparently we can't due to problems with renormalization. And I argue we shouldn't be able to because I believe it's completely different thing from a real force and if same math worked for two dissimilar things I'd be worried. :-)

I'm happy to hear that Pauli principle is unsettling not only to grumpy weirdo like me. :-)
Thanks for this idea. The product page says it is 218 PPI, but I don't see how that is possible given it is 34" wide. Pixensity says teh actual PPI is 163.44. Can you confirm the PPI on this monitor?

https://pixensity.com/list/lg-34wk95u-w-39631/