saltminer

Joined 7 years ago

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372
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Apr 8
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Comment · 1 year ago
This is incredible. I've also struggled to comprehend the scale of distance and time in space due to the sheer magnitudes involved, but this really puts it into perspective.

Some suggestions:

- Better documentation/help menu. (What is ∆t relative to? Some internal clock tick? Also, you should link the source code in the menu.)

- Arbitrary time adjustments so I could click on the date and set a custom date to view any point in the past or future

- The ability to see more than just the solar system

Comment · 1 year ago
Comment · 1 year ago
You can't use a NEMA 14-30 to power a PC because 14-30 outlets are split-phase (that's why they have 4 prongs - 2 hot legs, shared neutral, shared ground). To my knowledge, the closest you'll get to split-phase in computing is connecting the redundant PSU in a server to a separate phase or a DC distribution system connected to a multi-phase rectifier, but those are both relegated to the datacenter.

You could get an electrician to install a different outlet like a NEMA 6-20 (I actually know someone who did this) or a European outlet, but it's not as simple as installing more appliance circuits, and you'll be paying extra for power cables either way.

If you have a spare 14-30 and don't want to pay an electrician, you could DIY a single-phase 240v circuit with another center tap transformer, though I wouldn't be brave enough to even attempt this, much less connect a $2k GPU to it.

Comment · 1 year ago
That's hardly a SoCal phenomenon, sadly. In all the places I've lived, "protect and serve" seems to be abbreviated - "protect and serve our desk jobs and pensions" would be more accurate. If the TSA is security theater, the police are a circus, and the occasional show of force is them coming to town.

It's like those pictures of Luigi Mangione being perp walked in Manhattan with 20 cops and FBI agents behind him. Imagine if those officers were on the beat or enforcing traffic laws instead. That would make more of a difference in our communities than a photo op ever will.

Comment · 1 year ago
> During rush hour, cars block the box

There's an easy solution to this: have ticket writers waiting at intersections to paper all the cars who do it. It's not like they can drive away. NYC used to be really good about enforcement, and it worked extremely well.

It doesn't solve traffic, but it does help stave off gridlock and keep intersections free for bus lanes to operate normally.

Comment · 1 year ago
Too late to edit, but I scrolled right past the "Morningstar Pre-Sale Report, September 2024 [Pg. 14]" table. They've been primarily lending to deep subprime borrowers since at least 2021.

Considering other subprime lenders have reduced extensions while Carvana has doubled them, I'm guessing their lending standards have cratered even by subprime standards and Ally isn't happy.

Comment · 1 year ago
The real problem is the SEC has largely abdicated its role to meaningfully prosecute fraud. Short sellers shouldn't be our only real defense against fraud, but that's the reality we (Americans) live in.
Comment · 1 year ago
Comment · 1 year ago
I've seen this same problem with many so-called low-code/no-code application creation tools (e.g. Betty Blocks). In their quest to cover every use case, they cover none of them well, forcing compromises and creating more real-code work for the actual application developers whose systems have to be accessed by these tools.

It would have been quicker and cheaper if the company just hired more actual developers to integrate properly with existing systems (and resulted in more featureful, less buggy applications), but the prospect of paying lower salaries for less qualified people to do the same end result (as promised by the slopware vendors) seems to be a siren song of sorts to management.

Comment · 1 year ago
Comment · 1 year ago
The fact that C++ development has been effectively hijacked by the "no ABI breakage, ever"/backwards compatibility at all costs crowd certainly speaks to this.

https://herecomesthemoon.net/2024/11/two-factions-of-cpp/

There are a lot of pre-compiled binaries floating about that are depended on by lots of enterprise software whose source code is long gone, and these are effectively locked to x86_64 chips until the cost of interoperability becomes greater than reverse engineering their non-trivial functionality.

Comment · 1 year ago
I wish there were publicly available data on this stuff, as we can only discuss anecdotes. In any case, in the neighborhoods I've lived in, it's not uncommon for UPS and Fedex to have zero deliveries at least one day of the week.

If Fedex is rolling around twice in one day, it's never the same line (that is, Fedex Express vs Ground/Home; Express incurs a special surcharge for residential deliveries and thus is usually only used by companies that primarily deliver to commercial addresses or who don't care about cost).

UPS is similar; usually, they only roll around in the evening, and when they roll around in the morning it's for one package with a specific delivery window obligation.

During December, of course, this goes by the wayside. Even USPS will roll around twice a day on the weekends leading up to Christmas.

Comment · 1 year ago
One key difference between USPS and UPS/Fedex is that USPS does not do freight, and they do a lot more lightweight items (i.e. letters), so cargo capacity is much less of a concern. The fact that junk mail is so common actually reduces the need for cargo capacity since their routes tend to be made long not because of physical volume/distance so much as dwell time (that is, if someone is using EDDM[0] to target a neighborhood, you have to stop at every mailbox in that neighborhood, even if it's just to deliver that one piece of junk mail which will immediately get thrown away, and this takes far more time than delivering a bundle of packages to a handful of houses).

I remember reading about the NGDV, and one of the reasons it looks so weird is because USPS wanted a vehicle that was low to the ground (to make it easier to climb in and out of) and easy to see over the hood, even for very short drivers[1]. Given that they are in residential areas (and thus, in proximity of kids playing outside) far more often than UPS/Fedex, I can't say I disagree with that requirement. (Also, if you have a tall truck like UPS and Fedex typically roll, good luck delivering to the average mailbox while staying in your seat.)

USPS has certainly evaluated more traditional designs; in fact, they are actively using ~20k Ram ProMasters (a rebadged Fiat Ducato), which are quite similar to the Mercedes Sprinter, alongside ~9k mini vans[2].

[0]: https://www.usps.com/business/every-door-direct-mail.htm

[1]: https://x.com/Nir_Kahn/status/1364465483911675905

[2]: https://www.uspsoig.gov/sites/default/files/reports/2023-01/... (PDF page 6)

Comment · 1 year ago
>It's a strange feeling, like 5 years of my life just evaporated.

To quote Roy Batty, "All those moments will be lost in time, like tears in rain."

If there's anything I've noticed in this industry, it's that abstractions tend to outlive their origins. For instance, back in the 80s the Unix systems my workplace used (and subsequently, many of the applications they ran) had an 8 character max username length, and although those old Unix boxes (and their vendors) are long gone, we're still given 8 character usernames since nobody wants to find out the hard way that there still are some applications that depend on an 8 character max or which truncate longer usernames to 8 characters.

If you want to make a lasting impact on an industry but you weren't able to get in on the ground floor, your best bet is to get into advanced R&D, whether at a major hardware company or in academia. Anywhere else and your knowledge will either be wasted because nobody cares or it will be siloed off because the company will never open-source the tech you pioneered (and someone else will likely take the credit for it later on when they create an open-source equivalent).

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