HNHacker News
TopNewBestAskShowJobs

MikeDelta

1,226 karma · joined January 29, 2021

submissionscomments
MikeDelta··on SEC Sues Binance and CEO Zhao for Breaking US Securities Rules
Indeed. In general, security is a product. Commodity and currencies are asset classes.

BTC would fall under the crypto asset class. I don't think financial institutions see it a currency in terms of asset class.

MikeDelta··on New study: 70% of type 2 diabetes cases linked to food choices
Have you looked into the glycemic index of what you eat?

The glycemic index (GI) relates to the effect food has on the glucose levels after consumption: high is more severe than low. Vegetables have a low index and sugary foods a high one. Surprisingly white bread and cornflakes also have a high index, and other foods we would not describe as sugary.

Maybe the 'bad food' turns out to have a high index.

MikeDelta··on A cryptocurrency company had a $65M bill, per Datadog’s Q1 earnings call
Could be salespeople that are paid by contracts closed, with zero regards for the consequences to the company's reputation.
MikeDelta··on Vaonis Hyperia: $45k digital telescope
By the way, all the pictures they show are coloured (if from this telescope): the sensor the use in this device is monochromatic.

And space is not this colorful.

MikeDelta··on Vaonis Hyperia: $45k digital telescope
What a hype, pardon the pun.

"Just try out the power of the most advanced astronomical instrument ever developed."

I don't know... I am sure the telescopes professional astronomers use are more advanced... some operate even in space.

"Hyperia is made of Zicral, an alloy used in the aerospace industry for its outstanding mechanical performance and exceptional resistance to extreme conditions."

What are they going to do with a telescope like this such that it needs that material... other than charge a premium for it?

"Enhanced sensor sensitivity with 91% quantum efficiency."

The most important factor of the performance of the telescope are the lenses (and location for weather/light pollution). This is just ordinary.

MikeDelta··on A look back at the Argus C44 rangefinder camera
Not sure about this word, but the English language does not have a body that decides what the official words of the language are (unlike the French [0]). It seems that if a word or construct is used often enough, it becomes part of the English language by being included in official dictionaries like the Oxford Enflish Dictionary [1].

[0] https://en.wikipedia.org/wiki/Acad%C3%A9mie_Fran%C3%A7aise

[1] https://www.smithsonianmag.com/smart-news/heres-how-oxford-e...

Edit, it is part of written English: https://www.merriam-webster.com/words-at-play/lets-talk-abou....

MikeDelta··on The Andy Warhol Copyright Case That Could Transform Generative AI
Reminds me of Hackerrank claiming copyright on solutions to problems.

https://news.ycombinator.com/item?id=29239594

MikeDelta··on The EARN IT bill is back, seeking to scan our messages and photos
Many seem to not realize that privacy is not about having something to hide (I guess that would be secrecy), but about the right to keep things to yourself. Those are two different concepts.
MikeDelta··on Farmers ‘crippled’ by satellite failure as GPS-guided tractors grind to a halt
It seems that GPS signals can be used for higher accuracy if the receiving equipment uses two frequencies instead of one. This can freely be done by civilians, but requires more expensive equipment. Perhaps this solution with SBAS requires a cheaper setup?

https://www.gps.gov/systems/gps/performance/accuracy/

MikeDelta··on Scunthorpe Problem
They didn't have computers back then, but Odysseus used a logic-breaking name "Nobody": so Polyphemus shouted that Nobody was trying to kill him.

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

MikeDelta··on Show HN: Generate startup ideas based on HN comments
There is one thing worse than failure, and that is the regret of not having done it in the first place.

Except for cases where failure led to great financial ruin and loss of health etc.

MikeDelta··on What if ChatGPT was trained on decades of financial news and data?
It would also make a great interviewer, because I understand everyone used to read them for the great in-depth interviews.
MikeDelta··on Was there a U.S. nuclear weapons accident at a Dutch air base?
Regarding secrecy: a few years ago secret information got out because soldiers used flash-card apps to learn it, and those cards were released/available publicly.

https://www.bellingcat.com/news/2021/05/28/us-soldiers-expos...

MikeDelta··on Pursuing status will never bring true happiness
Owning a house, for instance. Having a solid job or a good resume so you can always find a job if you don't like your first, or own your own business that does well so you cannot lose your job and can live freely. Connections so that your business (or job quest) has a good chance of getting good results. A good income stream so you don't run out of money.

A lot of it is centered around money, such is our society.

A lot of things are fleeting, so it is important to also live in a country where the government won't take everything away from you because they don't like your opinion, or living in a country where war is less likely. (There are ways to mitigate these risks).

MikeDelta··on SpaceX alums are branching out and shaping the startup economy
Remember: it is all up to you to set the company culture. If you find the right people who can thrive under the freedom and responsibility that comes with it, I am sure you will have created a great place to work!

All the best with that!

MikeDelta··on German police raid DDoS-friendly host FlyHosting
I cannot find the reference but I remember reading, not too long ago, that even the professional ransomware gangs can be extremely lazy with their own security. Apparently even some well-known players (not script kiddies) could be identified because they used their personal email address or something similar.
MikeDelta··on Google Drive does a surprise rollout of file limits, locking out some users
Makes me wonder: if the amount of users affected is vanishingly small, then why implement it, as it sounds like a vanishingly small problem to me?
MikeDelta··on US banks have $620B of unrealized losses on their books
No bank out there has enough to repay the deposits of all their customers at once, that is just not how (most) banks work.

In other words, you can practically bring down any deposit-taking bank by starting a large-enough bank run. (Except maybe if the central-bank intervenes.)

MikeDelta··on Groupon, which has lost 99.4% of its value since its IPO, names a new CEO
The market cap dropped from $17.8 billion to $104 million. They also rejected a $6 billion offer from Google (at one moment).

Probably a lot of regret among those who did not cash/sell out, but that is hindsight.

MikeDelta··on Hospitals are reporting new mothers for neglect from poppyseed false positives
I seriously hope they sue and get an 8 figure settlement, or even more. And legal consequences for those involved.
MikeDelta··on The Internet’s Richest Fitness Resource Is a Site from 1999
Been a happy user of this site since early 2000, it thought me a lot about technique.
MikeDelta··on Show HN: Faster FastAPI with simdjson and io_uring on Linux 5.19
Agreed on jsons not being ordered.

The docs on simdjson mention that if you parse the fields in the order as they appear on file, then simdjson can do it in one iteration. If you get fields in random order, simdjson will have to loop the data a few times.

If your json on disk is

  { "field1": "val1", "field2": "val2" }
then it is faster to say (pseudo C++)

  simdjson::document_reference elem;
  std::string_view tmp;
 
  elem["field1"].get_string().get(tmp);
  elem["field2"]...
than the other way around. This works only if you know what you are looking for and it is consistent on disk. Note that you are reading from an iterator that consumes the value: getting a field twice gives an error; totally different than reading from a dict.

See also [1] under "Extracting Values: You can cast a JSON element to a native type..."

[1] https://github.com/simdjson/simdjson/blob/master/doc/basics....

MikeDelta··on Show HN: Faster FastAPI with simdjson and io_uring on Linux 5.19
We had to parse thousands of multi GB zipped jsons for financial data. I don't have any code but it involved (in C++) boost gzip to unpack chunks into 100MB blocks and the simdjson iterate_many function to parse the block into a stream. The json files were not line-delimited but every row had a newline (json: [\n{...},\n{...}\n....\n] ), so we had to clean the commas in order for simdjson to process it as if it were newline-delimited.

Whatever remained at the end of the buffer (few hundred bytes of incomplete json) we would copy just before the boost-unzip block so that there was a continuation of json data. We also reused the parser and string buffer for performance.

Also try to parse the json fields in the right order for fastest performance, if possible.

MikeDelta··on Why SAT Is Hard
Articles need to be aimed properly at the audience. Is it beginners or experts?

It ir is not for beginners, then why start explaining Big O notation and SAT with some pseudocode?

In my opinion, the article should explain what sat stands for because it is aimed at relative beginners.

On a note: my take on the community here is that in general nobidy here wants to be spoon-fed or be insulted if they ask what an abbreviation stands for. What they want is properly written articles so that they can investigate further, and a discussion with the community.

There are so many specialists reading HN and I am amazed at the level of knowledge and experience in the replies sometimes. They don't talk with snobbery about that users should read text books and not bother because they are not part of the select inner circle. Instead, they help out and educate.

That is what makes HN great.

MikeDelta··on Microsoft hijacks Google's Chrome download page to beg you not to ditch Edge
And remove all the annoying ads and news from the browser frontpage?
MikeDelta··on Chemists create methane fuel from sun, carbon dioxide and water (2022)
Definitely, I have no doubts we will be alive.

I was hinting a bit to the lyrics of the song 'In the year 2525'.

https://en.wikipedia.org/wiki/In_the_Year_2525

MikeDelta··on Chemists create methane fuel from sun, carbon dioxide and water (2022)
Today indeed, but let's see what we can do in the year 2525 (if human is still alive).
MikeDelta··on Africa will get a new $1B spaceport in Djibouti
Not at all, if it were investors who want a return on the profits. However, many (all?) projects are financed with (expensive) debt, so poor countries end up with debts they cannot repay and 'vanity' projects they could do without. Some analysts worry that countries end up in a debt trap.

I would love it if this is turns out a healthy project for the benefit of all, but I remain skeptical.

MikeDelta··on Africa will get a new $1B spaceport in Djibouti
It is not clear who will be paying for this, assistance to build as in expensive loans and building companies to be paid by said loans? There are pleny of high-profile projects like this that end up abandoned and the owner/operator in extreme debt.
MikeDelta··on Lost in the Stock
> If manufacturers were truly making chicken stock “just like your grandma did,” it would be highly perishable, incredibly expensive, and shelf-unstable.

I wonder why grandma's chicken stock would not be shelf-stable using old or modern food-preservation techniques.

← PreviousPage 2 of 12Next →