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bracketfocus commented on Countrywide natural experiment links built environment to physical activity   nature.com/articles/s4158... · Posted by u/Anon84
footy · 6 days ago
I live in the most urban environment that exists in my country and get significantly more physical activity than the car-dependent rural dwellers in my family. As it is, I am almost 40 and have never owned a car, cities are great.
bracketfocus · 6 days ago
That probably means you are an outlier.

One thing I see, is that people in urban environments typically opt-in to exercise (like voluntarily going on a run). Whereas those in more rural areas have more physical demanding jobs and responsibilities.

I’m an urban-based desk jockey who exercises a lot but it doesn’t really compare to my more rurally-based friends who are on their feet working blue collar jobs 5 days a week.

bracketfocus commented on Man wearing metallic necklace dies after being sucked into MRI machine   bbc.com/news/articles/cx2... · Posted by u/brudgers
hansvm · a month ago
Wouldn't that cause heavy distortion in the image though?
bracketfocus · a month ago
I know very little about MRIs, but it seems likely that they could recalibrate the machine and effectively adjust for something small.

Not removing it sounds dangerous though.

bracketfocus commented on Light exposure at night predicts incidence of cardiovascular diseases   medrxiv.org/content/10.11... · Posted by u/gnabgib
ekianjo · a month ago
that seems very short
bracketfocus · a month ago
It is fairly short, but seems like enough time to get a baseline of habits across nearly 90,000 participants.
bracketfocus commented on 7-Zip for Windows can now use more than 64 CPU threads for compression   7-zip.org/history.txt... · Posted by u/doener
vlovich123 · 2 months ago
people tend to care about decompression speed - xz can be quite slow decompressing super compressed files whereas zstd decompression speed is largely independent of that.

People also tend to care about how much time they spend on compression for each incremental % of compression performance and zstd tends to be a Pareto frontier for that (at least for open source algorithms)

bracketfocus · 2 months ago
This makes sense. A lot of end-users have internet speeds that can outpace the decompression speeds of heavily compressed files. Seems like there would be an irrational psychological aspect to it as well.

Unfortunately for the hoster, they either have to eat the cost of the added bandwidth from a larger file or have people complain about slow decompression.

bracketfocus commented on Serving a half billion requests per day with Rust and CGI   jacob.gold/posts/serving-... · Posted by u/feep
rokob · 2 months ago
I’m interested why Rust and C have similarly bad tail latencies but Go doesn’t.
bracketfocus · 2 months ago
The author guessed it was a result of database contention.

I’d also be interested in getting a concrete reason though.

bracketfocus commented on Samsung embeds IronSource spyware app on phones across WANA   smex.org/open-letter-to-s... · Posted by u/the-anarchist
grishka · 2 months ago
The system partition is made some fixed size, the same way disk partitioning works on PCs, and never resized, because resizing file systems is still a non-trivial task. It often has some free space too to accommodate future system updates.

On my 128 GB Pixel 9 Pro, /data is 109 GB. The rest is /system (although `df -h` doesn't show it explicitly, no idea what's up with that) and various other system-related partitions.

bracketfocus · 2 months ago
Yes, but if the phone shipped with less bloatware on the system partition, then maybe that partition would be made smaller initially.

Meaning the user would have access to more of the phone’s advertised storage.

bracketfocus commented on Samsung embeds IronSource spyware app on phones across WANA   smex.org/open-letter-to-s... · Posted by u/the-anarchist
grishka · 2 months ago
The system partition is usually the same size regardless of which storage option of the same phone model you get.
bracketfocus · 2 months ago
But if the system partition could be smaller, other partitions could be larger.
bracketfocus commented on DARPA program sets distance record for power beaming   darpa.mil/news/2025/darpa... · Posted by u/gnabgib
other_herbert · 2 months ago
The key thing they aren't saying is how much power it took to "send" 800 watts 5.3 miles...
bracketfocus · 2 months ago
They mentioned that it was 20% efficient at a closer distance.

So likely much lower than that.

bracketfocus commented on Global high-performance proof-of-stake blockchain with erasure coding   github.com/qkniep/alpengl... · Posted by u/lawrenceyan
bracketfocus · 3 months ago
What’s with the hate for proof-of-stake? Seems like the hate is directed towards the fact that those have more to stake, benefit more.

Can’t the same argument be made about proof-of-work? Those who have the ability to buy more compute, also benefit more.

Instead of buying GPUs/ASICs for mining you’re buying into the network you’re trying to secure.

bracketfocus commented on VVVVVV Source Code   github.com/TerryCavanagh/... · Posted by u/radeeyate
naikrovek · 4 months ago
this is the correct takeaway, in my opinion.

game developers must consider things that people like enterprise developers never concern themselves with, like latency and performance.

these days, at least where I work, everything is dominated by network latency. no matter what you do in your application logic, network latency will always dominate response time. with games, there is no latency unless you are writing a multiplayer server, and there are many ways to solve that, some better than others.

playing a single player factorio game, having huge factories on five planets, robots flying around doing things for you, dozens of ships flying between planets destroying asteroids and picking up the rocks they leave behind, hundreds of thousands of inserters picking up items and putting them onto or removing them from conveyor belts, and updating the status of everything in real time at 60 frames a second kinda hints at what computers can do today if you keep performance a primary concern. corporate developers never have to think about anything even approaching this.

i'm convinced that 2-4 experienced game developers could replace at least 20 traditional business software developers at any business in the US, and probably 50 enterprise software developers anywhere. They aren't 5x-10x as expensive, either. Experienced game developers simply operate on another level than most of us.

bracketfocus · 4 months ago
The comment reads as ragebait or sarcasm but I actually can’t tell.

I don’t want to take away from Game developers but as a “corporate developer” I can attest that a lot of what you said about us is blatantly false.

I’ve spent a lot of time optimizing the performance of many backend services. This is a very standard practice. Having highly performant code can save companies a ton of money on compute.

In fact I’ve worked on a stateless web server who’s architecture was completely designed around a custom chunked/streaming protocol specifically to minimize latency. All changes to the service went through rigorous performance testing and wouldn’t be released if it failed certain latency and throughout thresholds.

u/bracketfocus

KarmaCake day25July 10, 2024View Original