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@kiwu@twtxt.net I returned home from an on-site week at work. Commute was an adventure every day. It started off with a canceled train on Monday morning. Luckily, some very good mates granted my asylum. But even with shorter rides, I faced delays due to fuckwits on the tracks, then the train was terminated early due to the large delay, so we had to change trains. On the bright side, they then sent an entirely empty one, but I don’t get why they just didn’t continue with the first one instead. Due to another delayed train I didn’t catch my connection and the next one was canceled, so I had to wait for the following one. Super great fun. I’m very exhausted now and am very glad that I had already filed in flex time for tomorrow before the on-site event was scheduled.

Meeting my workmates in person was actually nice. It’s okay to do that once a quarter, I don’t need to do that more often. We should have had more meetings, though, trying to work in the office was expectedly incredibly inefficient. We certainly would have had more topics to actually discuss and think about. And most of them would have really benefited from nearly everybody being in the same room. Anyway.

Today, I even met my workmates from past projects in the office, too. So, the socializing was great.

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In-reply-to » Another AI rant:

@movq@www.uninformativ.de that’s the way large language models work, with a prompt. Rather than entering the prompt, most inference providers allow for specific files to be created that define the scope of what’s been requested, the skills the model is supposedly to posses, the stuff to “remember”, etc. Some will “learn” and add that “knowledge” to the proper files.

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In-reply-to » @lyse Yes, and that’s why I’m 100% convinced that we’ll see a massive brain drain in a couple of years. This will affect young people even more, because they don’t have all the “old” knowledge to fall back on.

@lyse@lyse.isobeef.org

even our hippest AI enthusiasts found it absolutely terrible

Does this refer to the training course or to the tools themselves? 🤔

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In-reply-to » We cleaned up the forest today with the scouts at absolute dream weather. Blue sky, no clouds, 19°C sunshine. In the morning it was still quite chilly and windy, though. We didn't find anything spectacular, maybe a rubber dinghy, three car tires and a broken ratchet strap are the most outstanding things to me apart from all the general rubbish, cigarettes, glass, wet wipes, etc. Still, a very fun activity. In the end we had bockwurst, grilled cheese and lye buns on the camp fire.

@lyse@lyse.isobeef.org totally in love with these flowers, and bee!

Bee and flowers

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In-reply-to » @lyse Yes, and that’s why I’m 100% convinced that we’ll see a massive brain drain in a couple of years. This will affect young people even more, because they don’t have all the “old” knowledge to fall back on.

@movq@www.uninformativ.de I couldn’t agree more! I also have the feeling that it causes more people to just accept “it’s a software problem, there’s nothing that can be done about it”. Which is very frightning to me.

Up until now, I was successful in refusing to actively use that crap. I had to do one mandatory AI training, but even our hippest AI enthusiasts found it absolutely terrible. Probably also nailed together by the same rubbish they want us to now use everyday as much as possible.

Code reviews are the part that I have to deal with most. And I believe that the code quality is degrading.

Let’s hope the bubble bursts sooner than later. It will definitely burst at some point. That’s for sure.

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We cleaned up the forest today with the scouts at absolute dream weather. Blue sky, no clouds, 19°C sunshine. In the morning it was still quite chilly and windy, though. We didn’t find anything spectacular, maybe a rubber dinghy, three car tires and a broken ratchet strap are the most outstanding things to me apart from all the general rubbish, cigarettes, glass, wet wipes, etc. Still, a very fun activity. In the end we had bockwurst, grilled cheese and lye buns on the camp fire.

I then went for a quick stroll with my mate. It’s crazy how quickly the clouds moved in, 30-45 minutes tops. There will be rain in an hour. And the coming days only reach half the temps. I’m glad I took advantage of the great spring day. Haven’t seen Azabache yet and with the rain on deck, the odds are against him and me.

https://lyse.isobeef.org/waldspaziergang-2026-04-11/

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In-reply-to » Eehhh, what the hell is going on here!?

@lyse@lyse.isobeef.org Yes, and that’s why I’m 100% convinced that we’ll see a massive brain drain in a couple of years. This will affect young people even more, because they don’t have all the “old” knowledge to fall back on.

It’s concerning, I’ve warned about it many times, nobody listens.

I think the best thing one can do is explicitly not use any AI tools but keep your actual skills intact. Might be out of a (good) job for a while, but once this bubble bursts, this is who is going to get hired again. (I think.)

And considering how insanely expensive all this is, I’m still (mostly) convinced that the bubble will actually burst. This stuff just isn’t sustainable.

… or I might be wrong. And if so, I see an even darker future that I don’t want to put into words right now.

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In-reply-to » Eehhh, what the hell is going on here!?

@movq@www.uninformativ.de Yup, I’ve also seen the floating point conversion happening with (1 << 63) - 1 yesterday night. But instead of pausing to think about it for a second, somehow all I had in mind was “give me a better representation, ain’t gonna have time for this shit”, so I turned it to hex. Beyond my comprehension what I was thinking there. O_o That’s embarrassing, unbelievable. Well, I blame late o’clock where my brain had already quit on me and went to bed.

Very interesting data point you raise there. The fun part didn’t cross my mind yet or at least I couldn’t pinpoint it. In hindsight it’s totally obvious, though. Past experience also tells me the exact same. Dealing with a problem and researching something myself is a so much more better teacher. The longer I faced up with a topic, the higher the chance to really manifest in long- or at least mid-term memory. If I just get told something, the odds are that it’s completely erased from memory in a matter of days if not hours.

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In-reply-to » Eehhh, what the hell is going on here!?

@lyse@lyse.isobeef.org AI result ahead, feel free to ignore.

I “asked” the AI at work the same question out of morbid curiousity. It “said” that SQLite converts that integer to floating point internally on overflows and then, when converting back, the x86 instruction cvttsd2si will turn it into 0x8000000000000000, even if the actual floating point value is outside of that range. So, yes, it allegedly actually saturates, as a side effect of the type conversion.

I couldn’t find anything about that automatic conversion in SQLite’s manual, yet, but an experiment looks like it might be true:

sqlite> select typeof(1 << 63);
╭─────────────────╮
│ typeof(1 << 63) │
╞═════════════════╡
│ integer         │
╰─────────────────╯

sqlite> select typeof((1 << 63) - 1);
╭──────────────────────╮
│ typeof((1 << 63) ... │
╞══════════════════════╡
│ real                 │
╰──────────────────────╯

As for cvttsd2si, this source confirms the handling of 0x8000000000000000 on range errors: https://www.felixcloutier.com/x86/cvttsd2si

The following C program also confirms it (run through gdb to see cvttsd2si in action):

<a href="https://yarn.girlonthemoon.xyz/search?q=%23include">#include</a> <stdint.h>
<a href="https://yarn.girlonthemoon.xyz/search?q=%23include">#include</a> <stdio.h>

int
main()
{
    int64_t i;
    double d;

    /* -3000 instead of -1, because `double` can’t represent a
     * difference of -1 at this scale. */
    d = -9223372036854775808.0 - 3000;

    i = d;
    printf("%lf, 0x%lx, %ld\n", d, i, i);

    return 0;
}

(Remark about AI usage: Fine, I got an answer and maybe it’s even correct. But doing this completely ruined it for me. It would have been much more satisfying to figure this out myself. I actually suspected some floating point stuff going on here, but instead of verifying this myself I reached for the unethical tool and denied myself a little bit of fun at the weekend. Won’t do that again.)

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In-reply-to » Eehhh, what the hell is going on here!?

@lyse@lyse.isobeef.org

Disclaimer: Can’t guarantee that I’m fully awake and I’m being trained at work not to use my brain anymore, so maybe this is complete bullshit. 😪🧟‍♀️

It says here that SQLite uses signed integers:

https://sqlite.org/datatype3.html

In pure bits, 1 << 63 would be 0x8000000000000000, but as a signed value, it gets interpreted as -9223372036854775808. Subtracting 1 yields -9223372036854775809 – but that doesn’t fit in 64 bits anymore. It’s possible that SQLite doesn’t want to wrap around but instead saturates? Haven’t checked. 🤔

With 62 bits, there is enough room.

With 1 << 64, I have no idea how SQLite wants to handle this, because this should immediately trigger a warning, because it doesn’t fit right away. Maybe it gets truncated to 0?

sqlite> select printf('0x%x', 2 * (1 << 64));
╭──────────────────────╮
│ printf('0x%x', 2 ... │
╞══════════════════════╡
│ 0x0                  │
╰──────────────────────╯
sqlite> select printf('0x%x', 0 - 1);
╭──────────────────────╮
│ printf('0x%x', 0 ... │
╞══════════════════════╡
│ 0xffffffffffffffff   │
╰──────────────────────╯
sqlite> select printf('0x%x', 0 - 2);
╭──────────────────────╮
│ printf('0x%x', 0 ... │
╞══════════════════════╡
│ 0xfffffffffffffffe   │
╰──────────────────────╯

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In-reply-to » Just a couple of shots from our trip to Bald Rock—finally got reception so I can share them!

@prologic@twtxt.net Awwwwwwww! I love these stripes, very cool!

Oh, I bet these inclines are no joke. I also know one about 200 meters long terribly steep dirt path up a hill around here. Climbing that is super exhausting. I just looked it up on a map. And it’s just ~17° or ~30% incline. Okay, that’s absolutely nothing compared to your adventure. :-D

But you got your exercises for the day then. Which will make for an even greater sleep tonight. ;-)

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In-reply-to » Just a couple of shots from our trip to Bald Rock—finally got reception so I can share them!

Thank you, @prologic@twtxt.net, that looks really stunning! Seeing forests reaching beyond the horizon always amazes me. This does not exist around here. I also like those balancing rocks.

Keep ‘em coming. Looking forward to see more. But most importantly, enjoy your trip, mate! :-)

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