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sema4hacker

798 karma · joined April 28, 2020

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sema4hacker··on Techniques to move huge stones - Wally Wallington [video]
This is for giant items like monuments, obelisks, etc.

If you just need to move a big boulder (say the size of a small desk) on your property, it's relatively easy to use a big lever and fulcrum to lift an edge of the boulder, wedge some rocks under that edge to keep it lifted, reposition the lever deeper under the boulder, and keep lifting and wedging, until the whole boulder flips over. Repeat. Taught to me by my housekeeper who used to move boulders with her father in Mexico.

sema4hacker··on How Fraud Swamped Minnesota’s Social Services System on Tim Walz’s Watch
It's guaranteed that ANY government program that simply pays invoices for products or services will be subject to fraud from day one. It's naive to create any such system without the necessary rigorous checks and balances to properly vet all payment requests.
sema4hacker··on Every mathematician has only a few tricks (2020)
Where OOP shines is implementing user interfaces. Most engineers doing math can ignore objects. But when a programmer has to implement a partitionable window with scroll bars and menus, constructing complicated objects built of simpler objects is a mess without OOP.
sema4hacker··on The Beef Programming Language
Although I hadn't heard of it until today, I now see their faq says "Work on the language and the IDE started in September 2014".
sema4hacker··on The Beef Programming Language
Any time I see a new language being promoted, what I really need to see is proof why I should use it. Not a list of features, not Hello World.

I wish there were an ISO-standard specification of about 10 non-trivial programming problems, each with a best-of-show implementation in all the popular languages, so a newly proposed language could demo why their 10 solutions might be considered better than other languages. For example:

  1. A compiler for a small language.
  2. A text editor.
  3. An assembler.
  4. A rendering engine for a subset of HTML.
  5. A regex processor.
  6. A ray tracer.
  7. An online store.
  8. A video editor.
  9. A game.
  10. A payroll system.
If I could see Beef's solution to those 10 problems, side-by-side with other languages' solutions, that might compel me to seriously consider Beef.
sema4hacker··on Seattle passes 70% college grads for first time
Could it be that Microsoft is the cause?
sema4hacker··on How the brain decides what to remember
I'm beginning to think memories are never forgotten, they just get fuzzier and less connected and outnumbered and harder to retrieve.
sema4hacker··on The VanDersarl Blériot: a 1911 airplane homebuilt by teenage brothers (2017)
I'm surprised the rear end of the fuselage was an open skeleton instead of being covered like the wings and tail. Wouldn't that significantly interfere with the airflow?
sema4hacker··on Ask HN: How many screens do you usually work with?
One screen per computer, but two computers total. One computer is on the internet, the other isn't, for security reasons.
sema4hacker··on Why 90s Movies Feel More Alive Than Anything on Netflix
Good movies aren't created often, while movies in general are now produced more frequently, so unimpressive movies are much easier to bump into. I just saw a chart showing over twice as many movies were released in 2018 as in 2000. It would be interesting to see for each IMDB decade what percentage of films are rated 8 or higher.
sema4hacker··on F*ck Wispr Flow – Open-sourcing Jarvis: private, local, free
For all these AI startups raising big bucks, how does their prospectus warn about competition? "Just about anybody can duplicate our product/service in a few hours using widely available tools"?
sema4hacker··on Ask HN: I feel like I've lost my motivation to continue learning programming
Even if AI hadn't shown up, I would have recommended you get away from programming. Do something you love, something you'd attempt even if they didn't pay you. Since you like to build, consider electrical engineering. You might even find that something with less of a learning curve like carpentry or HVAC can make you very happy.
sema4hacker··on Elon Musk Drove ~1/3 of Women Off Twitter
> There are some men who would wish they could be a man like Musk or Trump

Maybe the fame or money, but probably not the personality.

sema4hacker··on Gemini 3 pro advanced biometric scan to find your famous twin
A 1979 photo of me quite tan and blond got an 88% match to Robert Redford, which is quite flattering, but most people used to say Robert Wagner. The Mona Lisa gave a 68% match to Liv Tyler.
sema4hacker··on Ask HN: If Unix gets more popular would you use it instead of Linux?
How much difference in hardware and software availability is there between Linux and the various Unix versions? I often see mentions of a user abandoning Windows for Linux, but what percentage of users actually abandon one OS for another? Considering how long Unix has been around, even before Linux, is it likely to get significantly "more popular"?
sema4hacker··on Why our opinions about the Beatles keep changing
Unless someone reads a book or article that happens to change their mind, I think personal opinions about the Beatles' music and personalities rarely change. Instead, there's just an ever growing number of authors, critics, and reviewers adding to the pile of opinions.
sema4hacker··on The Tree That Produces the Only True Blue Fruit on the Planet
Should be titled "The Trees That Produce..." since it's a species, not a single tree.
sema4hacker··on We're Stuck in an Infinite Loop of Terrible Tech
Today I searched Amazon for "blue tape". Got over 300 results on 7 pages. Why does it have to be so bad?
sema4hacker··on I Let Claude Build My Home Network: Two ISPs Bonded, $312/Year Saved
To save money, I would have just switched to ATT fiber like you did, drop Xfinity completely, and try that for awhile. It's worked for me for years, and my only downtime has been a few times during winter storms when the power goes out completely.
sema4hacker··on The Why of Lisa G. U. I. – Andrew's Web-Log
An interesting interview with Dan Smith, who was the User Interface Coordinator for the Lisa, and then switched to the Mac project, is at https://archive.org/details/Semaphore_Signal_26
sema4hacker··on How Brazil's innovative 'Pix' payment system is angering Trump and Zuckerberg
Free to individuals, very low merchant fee, and instant settlement. Sounds good to me.
sema4hacker··on IPv6 Is a Total Nightmare – This Is Why (2020)
It's too late to complain about IPv6 (three years after it was standardized, and 23 years after it was initially drafted). It's better to critique something when it's proposed, not decades later.
sema4hacker··on New Rolls-Royce technology prevents sand damage to jet engines
> As part of the work, the University of Manchester produced a synthetic dust which matched the fine, talcum powder-like particles found in the Middle East.

Seems odd that they went to all that trouble and didn't just use original dust.

sema4hacker··on Original Superman comic becomes the highest-priced comic book ever sold
Growing up, I had a closet full of terrific toys in great condition, many of them unusual and fairly rare. When I got back from my first year of college, I found that my Mom, unlike the mother in the article, had given them all away. I was so disappointed.
sema4hacker··on Japanese court orders Cloudflare to pay ¥500M over manga piracy
Please put "¥500 million ($3.2 million)" in the title.
sema4hacker··on Trump's Devastating Plan for Ukraine
I think any Ukrainian agreeing to this plan is agreeing to their doom.
sema4hacker··on She Has Taken 30 Years to Write a 7-Part Novel About 1 Day. It's a Sensation
Actually, "1 Day" being endlessly relived.
sema4hacker··on Iran's Capital Is Moving. The Reason Is an Ecological Catastrophe
The article identifies pumping too much ground water, but not the "corruption" aspect. Were politicians being paid off to allow too much pumping?
sema4hacker··on Cloudflare outage on November 18, 2025 post mortem
If you deploy a change to your system, and things start to go wrong that same day, the prime suspect (no matter how unlikely it might seem) should be the change you made.
sema4hacker··on Show HN: Epstein Files Organized and Searchable
This is the kind of web site that makes we wish searches were encoded in the URL (...search?page=40), so URL edits allow me to jump anywhere, especially to the last page.
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