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> he posits that someone can, on a single exchange, hit a sentinel order placed by a market maker with a larger order and then have the market maker adjust the prices of orders behind the sentinel, in response to the execution [..] prior to the original order hitting the orders behind the sentinel.

"That can't happen." True, technically. But what you described earlier is close what is called the "Last Look" ability.[0] It's highly unethical, because it provides market makers and large operators a privileged data feed and ability to effectively go back in time.

Im simplified terms: if an exchange provides LL, executions against standing orders from privileged parties would be flagged as "pending" for a short window and the privileged party is sent a message of the pending execution. During the time window, they are allowed to respond with a cancel, which will be performed in front of the execution. And if a market maker knows that an execution would result in a bad trade, it will then start issuing cancels for other standing orders too.

There's also a kernel of truth in the other part I quoted. I firmly believe that market makers can't adjust prices for their standing orders, but in some exchanges there are order types called "reductions", where the market maker is allowed to adjust the available quantity of a standing order. So instead of issuing a cancel + order, the market maker can simply drop the available amount in their standing order while still keeping the order itself in the book.

0: http://www.bloomberg.com/news/articles/2015-03-03/barclays-l...
I know this might has nothing to do with your role but do you have any clue as to why the band is not available for e.g. Germany even though you support multilanguage?
What strikes me is ... The drawings aren't very good. They are at my sort of level (OK a bit better). But in terms of modern professional illustrators ... They are childish.

It's amazing just how far we have come.

And worth noting anyone educated enough to read and write, obsessed enough to create a whole book (even today that's an acheievement) is not going to be a well balanced thoughtful kind. Hence, manuals of black magic with badly drawn picture...
Too many business ideas but lack the focus to execute on one?
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The time-limiting step in molecular dynamics is a gigantic 3D fourier transform of the space containing the simulated atoms. This is relatively easy to parallelize provided you have fast communication between processors to synchronize data between between the timesteps.

I know less about Navier-Stokes solvers, but as far as I understand, it ends up as a linear system of equations that is far harder to parallelize.
How exactly?
Does not include issues.
At least he got a trial.

/sarc
I think you're conflating two kinds of sophistication here.

Your comment suggests that by "sophistication", we all mean "understanding the offerings of companies", such as an AI expert knowing the nuts and bots of an AI company's products. I am not talking about that kind of sophistication.

The kind I'm talking about is the kind that tells an investor "don't invest in just one startup, because for the math to work on startup investing, you've got to invest in 10 startups, each of which have a 1/10 chance of success", and then the kind of sophistication that (a) knows how to secure the dealflow to make that kind of investment strategy work and (b) still be OK if it doesn't.

Virtually no retail investor has any experience executing that kind of strategy. In fact: most professional VCs can't either: the asset class as a whole has historically lost money, and is subsidized by asset allocation rules at the large financial funds that plow money into VC firms.

Most startups fail; most of the good startups fail.

I agree: if it's just $100, who cares? But that's not how retail investors approach the markets they're allowed to invest in now. Maybe the JOBS Act should have capped the amount people can invest per year.
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Unfortunately, your logic is based on a faulty premise. It's not the goal of the american justice system to fairly enforce the law and to rehabilitate criminals so they can reenter society.

The evidence that the current "tough on crime" approach doesn't work is utterly overwhelming, but that doesn't matter in the least if building a more just society isn't the goal in the first place.

The reality is that the justice system is two-tiered. As long as powerful people don't get crushed by the system there's no real incentive for them to enact change. The American public is convinced only real criminals get treated inhumanely; it can't possibly happen to them. So they don't demand change from their politicians.

And so the cycle of police abuse, minimum sentencing laws, plea bargains and other brutality continues. The victims of the system are utterly expendable economically, and the public doesn't care or even notice what's going on.

See for instance "With Liberty and Justice for Some", by Greenwald (the guy who published the Snowden leaks)
The point is that this leads to corruption. A jury-of-peers reflects and represents wider society. A jury-of-some-selected-close-peers as you are suggesting would not reflect the needs of wider society.

Other other hand the broadly selected jury won't be able to understand technical cases.

Its 6 one half-a-dozen the other. (UK English expression that means both ways have major flaws and neither is ideal.)
The question is, did he really write the first version of Kazaa?
Plenty of Americans also want to invest in consumer products they believe in and support; a whole major consumer financial brand, The Motley Fool, was premised on consumers picking winners by investing in products they like. But it turns out that's not a very good idea, and virtually every retail investor is much better off investing in the market as a whole than they are in trying to pick stocks.

I'm asking: how could the situation be any better with companies that at best have a 1/10 chance of not abruptly ceasing to exist within 2 years?

Individual startup equity for retail investors is a bad financial product. We all know that to be true; it's weird that we're somehow able to pretend otherwise for the sake of argument.
But can you imagine what would happen if we allowed poor people to get out of it so easily? Everybody has a run-in with the law at some point and it serves to enforce social order. The rich pay a law tax and the poor are prevented from moving to a higher class. I mean, can you imagine how horrifying it would be to have all those poor people mingling in with us of noble birth? Awful, just awful. The system is a bit inefficient, I'll grant you that. Maybe when you turn 18 you pay half a million or get an automatic felony. You would have broken the law anyway...

p.s. </sarcasm>
1. Unix shell solved one thing very well: (unary) function composition based on a text protocol. It gets complicated already when you want to beyond a pipe - e.g. A graph like a makefile. Then you need to leave the pipe metaphor in nost cases and deal with artifacts like files. Even more so, map-reduce was a big shift that went beyond the unic metaphor.

2. There was a different metaphor that had its merits: object composition through standard interfaces, e.g. OLE/COM and the likes. One might argue about its implementation (embedding a Visio object in a Word document still produces crashes, 25 years later), but as a UI metaphor it was very powerful.

3. The web's metaphor is coupling of disparate content through URLs and HTTP (and HTML). One of the most mind-boggling metaphors ever introduced to man (talk about doing one thing well). Today we use REST APIs as the atomic pieces (do one thing well) and Javascript/ObjectiveC/Java as glue. Same thing.

4. As for application it goes, "Any sufficiently complicated C or Fortran program contains an ad hoc, informally-specified, bug-ridden, slow implementation of half of Common Lisp" (Greenspuns tenth rule). Slightly updated this means that as programs get more complex, they tend to become more integrated abd customizable, to the point where you use a high-level language to glue the different parts. If you're lucky they may have replaced a custom common lisp with a mature V8 engine, but the lore is still the same.

5. Outside of academia, people (product managers in particular) tend to be focused on solutions, not abstractions. And for good reason: solutions are often shortcuts for common applications of abstractions, and therefore they provide lots of value. File.ReadAllLines() vs. doing the same with 3-4 Java classes in the old days is the best example.

6. In the end, we need people to think about abstractions: unix pipes, map-reduce, URLs. And we need other people who think about solutions: The IPhone, the Google world etc.

7. As for the OP: curl might be a good start of a pipe. Add a program that parses tables, and a program that posts to REST APIs...
You have a very good point about disabling updates. Everyone here seems to think that OS updates are vital-important, but they are not. If you are running latest browser, instant messenger and personal firewall, you are unlikely to catch malware online regardless of OS patches installed.

So, Windows 10 actually does not complete against Linux or PC-BSD, it completes against previous versions of Windows without telemetry crap, i.e. Windows 7 and Vista. Exactly these operating systems with disabled updates will dominate for the next 20 years, not Linux or BSD.

Btw, this approach (disabling updates) also solves all well known problems with long time reboots, metered internet connections, tray nags about Windows 10, insufficient disk space to save old OS etc.
As somebody who has to deal with spreadsheets every day and hates that workflow, I really appreciate the initiative.

That said, I would like to see a more clear explanation of what is the use case. Scientific computing is a too general term. In other words, when should I consider blabr? How does it compare with a spreadsheet or a real programming language? Also important: when should I NOT use blabr?
IMHO ordinal values as the most misunderstood ones - their are neither categorical nor numerical (even if they happen to be represented by numbers). Setting utility by hand is at best - a questionable way to do it. The educated way is to use Item Response Theory (see e.g. https://github.com/philchalmers/mirt/wiki).
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Wouldn't people notice it though ? I mean if you hold 50% percent of that computing power, wouldn't someone detect that a large portion of the network traffic revolves around one place ?

Also people would notice that the internet would be "off".
I'm sorry, but watching the video, I just stare at those horrific nails and can't even hear what she's talking about...
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It's not so much of an idea. Many are already thinking about it. Like always the devil is in the execution.

I'm more interested into how he will manage to develop it, meaning how much investment he can built up, and what kind of talent he can attract.
It's not really true that much of the value of VC investment comes from things like insight.

What is more true is that professional VCs compete for deal flow, and among the things they use to try to compete is advice and their rolodex. But don't confuse the cart and the horse! What's important is the competition.

The problem is that retail investors do not --- cannot, really --- compete for deals. They'll invest in things that have a 1-Click "Buy" button. They won't fly to Palo Alto to take a coffee shop meeting with a promising investment prospect.

So there's an adverse selection problem. The VCs poach the good deals. Some might slip by and land on crowdfunding sites, but the statistical reality will be that the deals VCs have access to are advantaged. Worse: everyone knows this, and a huge part of raising money (long term) at a startup is signaling, and so there are reasons for good companies to avoid crowdfunding even if they can't stand VCs.
You can't simply diversify. You have to pick a specific kind of company. If you invest in 10 startups that all have an equal shot at 2x'ing --- a fabulous success for a stock market pick! --- you will lose money, because the failure rate of companies with no operating history swamps a 2x return, and the winners can't adequately subsidize the losers.

If it was just a matter of making sure people diversified, I'd agree with you.
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I see no reason it wouldn't work with paper tape, other than the hotwire cutter which would have to be replaced with a blade.
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Owning 50% of the mining infrastructure is not an exploit. The system is designed with that in mind - anyone in control of that much hash power has no incentive to use it, because the value of the currency would instantly evaporate. They in fact have strong incentives to avoid putting themselves in that position - because it devalues the currency (which they have invested so heavily in), and makes them a target for attack. And that is exactly what we saw when ghash hit 50 percent.

Anyway, it's a false choice. I'll take the hyper-public well described risk of a 50% 'attack' over the risks of counterfeit paper currency manipulated in secret by unelected officials any day. Similarly, it'd take much more time and money to control a blockchain based internet than the one we have now, and if it were exploited in that way, it'd be substantially more likely to be known by everyone, which in itself is a deterrent to exploiting it in the first place.

All that being said, there are probably reasons that other architectures on which to build an overlay network are better than this - but 'exploitability' is not one of them.
Poor approximations of heaven will suffice for poor approximations of infinite greed.
I can see it now.

A wizened old judge sits in court, looming down on the accused (the term defendant implies they have a hope in hell of defending themselves), presiding over a trial he doesn't understand. A young man did something dangerous with a computer.

There is no jury, because this is a secret trial - what is being discussed here is a matter of national security. The young man is suspected of some kind of technological terrorism, the judge understands. The young man looks unhealthy, sallow - the judge doesn't consider that he has spent a month in a holding facility being politely but forcefully questioned about his political beliefs, his thoughts on terror, his religion, his economic orientation.

The trial proceeds. Great stacks of print-out of browser history are wheeled out on trolleys. The volumes are enormous. The young man must be pathological. The security cleared expert witnesses explain that this young man clearly uses the internet heavily, he is possibly an addict, many of these "URLs" are very technical, possibly dangerous. It appears he has been hacking thousands of websites. He is clearly a threat, a dangerous product of a world gone mad that the judge only knows to fear. His wife is making casserole and he wants to get home.

Sentencing is passed. The young man is not allowed to talk about these proceedings lest a harsher sentence yet be meted out. He is sentenced to prison and is thus conveyed. His life in this society is effectively over, and his future holds only scrutiny and prejudice, to which he is not permitted to respond, and cannot even have the solace of mute rage, as the drugs he is made to take by the state for his dangerous addictive and compulsive tendencies prohibit such.

In his cell he sits and reflects on his crime - being a web developer who retweeted a link to a leaked GCHQ document.

With enough data and the right apparatus, you can achieve political harmony within your populace in the matter of a generation.
The essay suggests that covering the commutative property is possible at this age level. In any case, at this level that property means "with addition and multiplication of numbers, it doesn't matter which one goes first."

The problem is that the test can't distinguish between two possibilities.

Here's an account I once heard. An elementary grade state-level test for general science asked something like "of the following materials, which are used to make plates to test mineral hardness? a) wood, b) glass, c) porcelain, d) plastic".

The answer in real life is b) and c), but only one answer was allowed. In one class, some students picked b) and others picked c). When the teachers complained, the state said that glass was too dangerous for an elementary school, so isn't part of the curriculum, so the student shouldn't know that.

The problem is, a geologist had visited the class and showed different types of plates used in real life. The students, in essence, were penalized for knowing more than they were expected to know.

I can make the similar case here. A good test shouldn't penalize a student for knowing too much.
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I'm not too afraid. We already have many ideas to reduce population growth, some more drastic than others. In fact it already happens by itself as countries get richer. Even if these ideas stop working in the future, a government can come up with new ideas faster than evolution can react.
I have a perfect defense against getting zombified - shit like this tends to shoot my anxiety levels sky-high, which lowers my productivity down to zero, which means I'll kill myself or die of heart attack long before I become a drone...
How is that possible to have that important part of patent litigation happen only in this part of the US?
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"As one of the lead software engineers on both the original Microsoft Band and now the Microsoft Band 2,"

One of the things that stood out in the article (and the reason I posted it) was the sheer number of sensors packed into the device. Really impressive.

Is their a division in the software between the embedded device, application and back-end?
In math, a x b and b x a are equivalent only when dealing with commutative (a.k.a. Abelian) operations. If a and b are matricies then the above does not hold. Consider:

a = [1, 2]
b = [ 3 ]
[ 4 ]
The backdoors aren't hard to guess BTW - one noteable source is reverse engineering the HaCon offline products.
I kind of agree with you here, bu people do seem to be willing to pay for it at the moment.
That's a shitty generalisation, historically true but far less so amongst modern professional non-conscripted standing forces.
Maybe I'm reading your comment wrong, but you seem to have an exactly opposite vision for what is good than I personally have. You say: data collection is bad ("spying"), letting rich get individual health monitoring is cool. I say, data collection is cool and let's have more of it to achieve johnchristopher's "health improvements on a matter larger scale", and stop wasting perfectly good tech on creating toys for clueless rich people.
This article reminds me of theologians who use argument from ignorance to justify their own beliefs in one true god (basically an attempt to impose some absolute moral framework on society).

OK, there is always competition, no problem here. But there are nonetheless many other systems than market decision-making, and there is no clear winner from the moral point of view. Just one example can be democratic voting about economic allocation. I would love to see him show that this is not socially optimal, without showing the same about the market system. (To simplify things, we can consider market system to be one where you can accumulate votes.)

In fact, we don't even know if "socially optimal" solution exists or is unique!

Also, a minor point. It's been shown that price signals work only in the environment with perfect information and rational actors, but then the price is superfluous! This well-known counterargument is not addressed at all.

Someone put it nicely here on HN, once economics stopped calling itself political economics, it became much more ideological.

P.S. Downvoters, please, leave a comment. I will happily have a discussion with you.
What is the purpose of Translate other than to get more eyeballs to stick an ad in front of? Are you suggesting Google provide that service out of pure altruism?
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I don't know about happy, but the most expensive real estate in the world is in very densely populated places, such as New York City, San Francisco, London and, yeah, Tokyo.

So, if not happy, at least willing. Or Montana and the Gobi desert would be hella more expensive.
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Well, to nitpick slightly, the case here was a potential homicide, so it didn't really count as trivial. It should be an open and shut case though.

As I read the article I found myself getting angrier and angrier at how it was playing out & how powerless I or anyone else was to do anything about it. Of course I was aware of the concept of plea bargaining, but I had no idea such an overwhelming majority of cases are settled that way.

Like you suggest, there should probably be some court where clear cut cases like this are heard so they are dealt with quickly and efficiently. I'm not from the US so I'm but sure if such a concept already exists and it's just the magnitude of the potential crime here that's the obstacle?
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Scottish here. I'd say that saying actually means both are ultimatly the same, as in they might be difference but they're both equally negative. In this case, it would indeed be refering your assessment that both ways have major flaws and neither is ideal. But the point is, it has a wider meaning that could be invoked when comparing two good outcomes, for example.
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Its not just lack of motivation for justice.
Theres a positive motivation from the burgeoning prison-industrial-complex to keep as many people in prison for as long as possible.

https://en.wikipedia.org/wiki/Prison%E2%80%93industrial_comp...

Its big business, and its lobbying power and political clout continues to grow exponentially (if they get harsher laws and penalties enacted then they get more inmates and their business grows, allowing them greater lobbying power, and so on)

Its one of those seemingly insane systems that can develop over time but is very hard to stop as it has so much momentum and involved parties. Theres plenty of other examples in the US like food production and energy etc.
I have ordered one from amazon.co.uk, they ship to germany, you can order with your german amazon account.
It's released the on 19th november, amazon says it will arrive 20-21 november. Looking forward to it.
You monster.
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