HNHacker News
TopNewBestAskShowJobs

beowulfey

2,095 karma · joined April 11, 2013

Postdoc, cellular neuroscience
submissionscomments
beowulfey··on Debris found came from missing Titan sub, says friend of passengers
Yes but you also don’t want to operate so close to the safety margin. If you need to travel to 3800m, you design a sub to safely withstand 1.5x that. And then agreed that yes it should not implode right if it were to reach that depth. At least this is how I remember learning it, which I admit was a long time ago.
beowulfey··on Debris found came from missing Titan sub, says friend of passengers
Their website extensively mentions the acoustic monitoring system, with the thinking that any stress fractures would be detected prior to failure.

It probably did, but unfortunately, I think the window of time was not enough the return to the surface (perhaps milliseconds, but who knows)

beowulfey··on Debris found came from missing Titan sub, says friend of passengers
So many things about this venture were not really considered. I am terrified that this guy was an aerospace engineer. It feels like he threw the book about engineering safety out the window.

The big one is designing the sub to travel to 95% of the expected maximum depth, leaving a 5% margin of safety. I was taught to aim for a margin of safety of (I think it was) 50% back in the day. Operating so close to the safe limit for the sub is appalling. That doesn't even include all the other warning signs about the design that were brought up.

The missing beacon on the sub, in case of loss of radio contact, is another standout. No consideration given for loss of power or anything. Consideration of contingency plans is so important.

A minor one that is really indicative of the overall attitude is drilling screws into the carbon fiber hull, possibly exposing the hull to stress fractures from both the screws and the constant weight of holding a monitor. It's... just a silly thing that could have been avoided. I'm not saying those screws are why it failed, but if you can use an adhesive to hold your monitor in place, wouldn't you rather do that then by drilling directly into the hull keeping ~100 atm of ocean out of your face?

It just makes me so sad for so many reasons. It definitely could have been avoided...

beowulfey··on Titanic tourist submersible goes missing with search under way
> "No other submersible currently utilizes real-time monitoring to monitor hull health during a dive. We want to know why. Classed subs are only required to undergo depth validation every three years, whereas our RTM system validates the integrity of the hull on each and every dive." [1]

I suspect your intuition may be why RTM is not really used. Failures happen too quickly for them to give useful preventative data, perhaps?

[1] https://oceangate.com/news-and-media/blog/2019-0221-why-tita...

beowulfey··on Titanic tourist submersible goes missing with search under way
CBS also does 60 minutes, which I've also long respected for a similar kind of calm, collected vibe for journalism.
beowulfey··on Titanic tourist submersible goes missing with search under way
Is this a bot? What a strange thing to say in a thread about submersibles.
beowulfey··on Titanic tourist submersible goes missing with search under way
I think this is the big thing for me. David Pogue, when he went on a dive with them last year, pointed out that the vessel has no beacon [1]; yet the door bolts from the outside. Apparently there was a five-hour period where the company did not know the location of the sub after it resurfaced.

To me, that seems crazy. Having a GPS beacon seems like a no-brainer for safety purposes. It feels indicative of the engineering as a whole.

[1]: https://twitter.com/Pogue/status/1670826522138091521

beowulfey··on Titanic tourist submersible goes missing with search under way
Not a lot of information about this one. Does the Coast Guard have a submersible of their own that they could use to recover, even if they were able to find them?
beowulfey··on Louis Rossmann calls community to leave Reddit
Ha, that’s a great point!

Imgur also became a community of its own. I don’t remember when it happened, but perhaps Reddit thought they were becoming a true competitor and opted to pull away.

beowulfey··on Louis Rossmann calls community to leave Reddit
It’s kind of silly, to be honest. They basically had free video and image hosting, and Reddit decided to say screw that, lets increase our server fees dramatically. I still don’t really understand what motivated that decision. Did they really gain so much by self-hosting content?
beowulfey··on Reddit’s blackout protest is set to continue indefinitely
When you make an account on one server, it doesn't duplicate that account to other servers. Each server is independent, but they can interact together.

It's like if you opened up a reddit thread while logged into your hacker news account, and decided to respond to a comment in the reddit thread. Federation would give you that ability. Your username, in that thread, would be something like "cdelsolar@news.ycombinator.com" or something like that, to show that you were posting from a different server.

beowulfey··on Reddit’s blackout protest is set to continue indefinitely
Lemmy is the software that runs on all the servers. Lemmy.world and Beehaw are separately running that software. You make accounts on either server (just like you can make a Gmail account, or a Hotmail account), and do all the things with either account on either server.

Well, you could, but Beehaw basically blocked Lemmy.world. But otherwise the metaphor holds true. If you make an account on some other instance, you can subscribe to communities on Beehaw, post on Beehaw, and reply to users on Beehaw posts. When doing so your username, instead of being e.g. "mahogany", changes to "mahagony@[LEMMYSERVER]". That's how you can tell who is a user of that particular server.

beowulfey··on Reddit’s blackout protest is set to continue indefinitely
That's why I recommended it as a Reddit alternative ;)

Nah, just kidding, it's a good point. But it's a good starter server, and once people get used to the idea, I think they'll naturally gravitate to other servers.

beowulfey··on To Understand the Past, Pick Up an Old Magazine
That's true -- you mean comparing old books with new books? That's a good point!
beowulfey··on Reddit’s blackout protest is set to continue indefinitely
Try Lemmy.world. Currently the fastest growing Lemmy server. It feels basically like any other social media site, like Hacker News or Reddit. I was using it, and seeing people post from other servers was pretty seamless and felt intuitive.

Honestly, I say this all the time but I think people just need to treat federation like it's email. The difference is that the "email threads" are public to all, rather than in your inbox.

beowulfey··on To Understand the Past, Pick Up an Old Magazine
I fully maintain that a lot of information known by the general population back in the day has been (or will be) lost to the sands of time. Sometimes it feels like information I find online for certain trades, like cooking or carpentry, is just a series of blogs all parroting each other. Old books contain an abundance of helpful tips, knowledge and ideas that I usually can't find as easily online, and I find them fascinating to read.
beowulfey··on Show HN: Non.io, a Reddit-like platform Ive been working on for the last 4 years
Maybe for the better. I think personally I’d be more inclined to upvote posts/content that I enjoy if I knew it directly supported them.

Same reason I buy albums that I love despite me already having Spotify—to give back to the creators.

beowulfey··on Livestream of Reddit subreddits going private in protest
There are a lot of alternatives that replicate Reddit's functionality. I've tested out three or four of them over the years.

The quality differences are 100% due to the differences in the communities. They are social deficits, not technical ones.

beowulfey··on Reddit bans subreddit detailing how to move to competitor Kbin
Doesn't seem to be -- here is the source:

https://codeberg.org/Kbin/kbin-core

It's ActivityPub though, so it can communicate with Lemmy and others.

beowulfey··on Apollo will close down on June 30th
I would not be surprised if they announce an end to support for Old Reddit soon. They are gearing up for an IPO and want to get rid of all the non-moneymaking cruft.

Essentially what they are doing is trying to reach equilibrium in terms of users and income sources so it all looks tight on the books. They won’t IPO until they can figure out final changes in user numbers, etc.

beowulfey··on Apollo will close down on June 30th
I’m just one Apollo user, but I don’t plan to install the official app. It’s terrible and riddled with ads.

It’s the same reason I don’t use instagram—seeing an ad every two images bugs the crap out of me. The difference with Reddit is there was a nice third party option.

beowulfey··on Apple Vision
If it’s as good as they say, then the market will show it. It’s not worth worrying about whether it will succeed or not; that’s Apple’s concern alone. We can all just enjoy the ride in the meantime.
beowulfey··on Stop eliminating good candidates by asking them the wrong questions
Personally, I would not enjoy working for someone who was annoyed by me asking questions. Questions mean someone is interested in it, and is paying attention. To learn about something is to invest effort into it; it’s a great sign. Anand dodged a bullet here IMO.
beowulfey··on Tree of Thoughts
>From the moment we rise in the morning to the instant our weary heads hit the pillow at night, the inescapable struggle of labor consumes our lives.

Sounds like someone doesn't like their job.

The whole post is amazing -- it reads like stereotypical cult propaganda straight out of science fiction. I definitely expect they'll one day be posting about how we can digitize our consciousness à la "Scratch" from that one Cowboy Bebop episode [1].

[1] https://cowboybebop.fandom.com/wiki/Scratch

beowulfey··on 12 years since Saab’s bankruptcy: Secret NEVS electric cars revealed
Unless I'm misreading the article, they are not building any of them because NEVS also went bankrupt...
beowulfey··on Container shipping has cratered, as ship owners try to avoid unprofitable trips
When journalism decided to make a deal with the Devil, and ads became the main source of revenue, it was inevitable for writing to shift towards maximizing clicks. The dopamine pulses of this style cannot be ignored and so to compete all news eventually reached equilibrium in this same vein.
beowulfey··on Legend of Zelda game sells 10M copies in three days
This is why I always prefer physical copies of games. I actually really appreciate that Nintendo offers this still.
beowulfey··on YouTuber who staged plane crash faces up to 20 years jail
I mean, to me personally that sounds like a gimmicky title. Without putting why he is going to die, it sounds less factual and more like a blog post about how Elon Musk should learn to smell the roses because he isn’t getting any younger.

I get what you’re saying though. With sentencing, I feel like the maximum sentence is always given, and while dramatic it is very common to see.

beowulfey··on A mansion hidden directly under the Bay Bridge
I’m not sure if your first sentence is true, but it’s an interesting idea. My gut says even the most staunchly anti-local transit folks would still gladly use public transit in a city that has a good system (e.g. if they were to visit Paris, or Tokyo, etc).

Saying people would never use transit even if it were more convenient doesn’t match the pattern of what I’ve observed actual humans do. It would be nice if there was a study on this.

beowulfey··on Iowa governor will sign bill rolling back labor protections for children
This is likely the bill, passed two days ago:

https://www.legis.iowa.gov/docs/publications/LGR/90/SF542.pd...

It is an amended form of a previous bill passed in April (linked by another comment). I noticed that it now clarifies that children under 14 are not permitted to work (previously it was allowed under certain conditions). So, that’s good. 14 and up are allowed to work.

← PreviousPage 8 of 25Next →