• 9 Posts
  • 106 Comments
Joined 1 year ago
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Cake day: June 12th, 2023

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  • I’ll post and respond all day, but if nobody is interacting, it’s going to stay quiet.

    Well I just wanted to respond because I’m also trying to comment as much as I can and even post every now and again. But the issue I’ve seen is Lemmy draws a certain kind of person, which means a lot of like minded people in the comments. I see your response here, read it, like it and then think: “Yes I agree, nothing to add”. So I don’t respond, which makes it feel pretty quiet.

    Another thing I’ve seen is not a lot of people even bother opening posts, they just scroll through the feed, get their dopamine and that’s it.


  • I know you are joking, but for people that don’t know: Solar Stills are total scams. They might work in a pinch as a survival tool, but for long term it’s a non starter.

    They have many issues, for example in places that don’t have a lot of water and thus would be the most needed, they simply don’t work. If there isn’t a lot of water in the air, there isn’t any to extract. Even in perfect conditions these things produce very little water, in most conditions you’d be lucky to get a couple of drops. Second issue is the water isn’t clean, there is so much stuff floating in the air, you can’t drink the water that comes out without filtering / boiling first. If that step is required you might as well go with ground or surface water sources. And if there isn’t any ground or surface water sources, there won’t be any water in the air most likely. Third issue is you are creating a hot and humid environment, which is an excellent breeding ground for all sorts of nasties. Think legionnaires disease and all sort of other bacteria and fungi. Within days it becomes a serious health hazard. Last issue is the materials used are almost by definition cheap and exposed to hard uv a lot of the time. This makes them degrade quickly and fall apart. Leaving plastic waste and chemicals leaking into the water it produces, until it just falls apart.

    There have been so many crowd funding campaigns for clean water from the air over the past decades. Maybe some of them are simply naive and well meaning, but almost all are plain old scams. Feeding off the desire of people to help other people, only to fill their own pockets.

    And furthermore, the problem with access to clean water is capitalism. There is plenty of water available, we have the means to extract it from the ground, surface and sea. We can process it, clean it, recycle it. Use trucks or pipes to transport it to places that don’t have it. The only issue is, that costs money and the people living where the water is needed don’t have a lot of money. So bringing water to these places simply doesn’t generate a profit and thus doesn’t get done. It isn’t some kind of huge technical issue, there are many rich places in the desert that have plenty of water. Think oil states in the Middle East, or places in the US like Nevada, Arizona, New Mexico etc. Capitalism is the issue, not technology.











  • Not to defend Fahrenheit, it’s a nonsense scale, however: As with most subjective scales the entire scale can be split into good and not good. The top part is good and the bottom part is not good. The middle of the top part is seen as average good.

    So around 75 degrees would be perfect, which is close enough for something as subjective as temperature.

    This is why in things like movie or game reviews a 7/10 is seen as average. Like it’s good, in the good part, but right in the middle not anything special. A 5/10 or lower is seen as not good, not worth seeing, not worth your time etc. This works for reviews, grades, person attractiveness rating etc.




  • I can also recommend the book the TS mentioned, it is very good and after reading it you will understand regular expressions. It’s fine to use a cheat sheet if you want, cause if you don’t do it regularly the knowledge can sag, but the understanding is what matters. Also depending on the context, different implementations can have slightly different syntax or modifiers to be aware of.

    I lent out the book to my brother once and he somehow lost it, so I never got it back. Don’t lend out book guys.

    And remember not everything can be solved using a regular expression: https://xkcd.com/1171/




  • It’s special parking spaces right near the entrance where you can drop off people. The idea is you drop them off right next to the entrance, they go in and you find a parking spot. That way they can be sure they are on time for their appointment, even if finding a parking spot takes some time. And people who can’t walk very well (which is more likely at a hospital) don’t have to walk from the other end of the parking lot to the entrance. It’s called kiss and ride because you are intended to park long enough to kiss them and drop them off, then ride off so the space is free for someone else. There’s only a finite amount of places, so staying as short as possible is key.

    Sorry I thought it was a common enough phrase https://en.m.wiktionary.org/wiki/kiss_and_ride




  • The boring company is a scam. They don’t do anything new or better and in many ways are much worse.

    They took the costs of major tunnel projects, calculated the costs per meter of diameter, scaled it down to their max diameter and compared the two. Then they say OMG WE ARE SO MUCH BETTER! Well sure, because that’s in no way a fair comparison to make at all. Let alone the fact that comparing budget to actual costs is a no go, it’s not possible to just scale the costs.

    If you want to make a small narrow tunnel, for example to connect two existing buildings on a existing manufacturing site with a small diameter to for example run some infrastructure and a servicing tunnel, you don’t use a tunnel boring machine. You just get out a digger, dig a big hole, drive the digger down the hole, dig forward, brace, dig forward, brace etc. It doesn’t cost much at all, doesn’t require many people or special equipment and goes pretty fast.

    If you want to make a big ass tunnel, for example for a road or a railroad, you might want to use a tunnel boring machine, but mostly traditional digging is preferred. We’ve gotten pretty good at creating tunnels using diggers and explody stuff and have been for thousands of years. When it’s figured out a tunnel boring machine is actually the best option, you need a company with a lot of experience and equipment to get the job done. When you are at that point, money is mostly a non-issue and time becomes the main limitation. These projects take a long time and the public or company providing the funding needs it done, they don’t mind paying if it’s done as fast as possible. And experience is the key to getting huge projects like that done on time.

    The costs come mostly from all the red tape, safety provisions and pure manhours getting it done. The costs of the machine is so much a non factor, there are times the machine is custom built for a project and a lot of it is left there because taking it out isn’t worth it. Cutting on red tape isn’t possible, regulations are regulations and they are strict for a reason. Cutting on safety is a Elon trademark, but in a lot of places you can’t get away with that. And doing that within your own company is one thing, but if it’s a job for a client, the client might not be inclined to agree to something like that. The manhours can be minimized with a super efficient setup and you can count on companies having done a lot of projects over the decades know how to do it as efficient as possible.

    And on the safety point: The only tunnel the Boring Company has ever built would not be allowed to be open to the public in most places. And it actually isn’t really open, you have to sign a waiver beforehand and only certain personal is allowed in the tunnel and only with their Tesla cars. It’s only barely large enough for a car and would be considered way too small for an actual road. Real tunnels need stuff like emergency exits, guardrails and a walking space behind the guardrails to get to the emergency exits, a lot of safety infra, monitoring, ventilation, air inputs and outputs, fire safety etc. You can’t even drive in their tunnel with regular cars, the fumes have nowhere to go. And the day one of their cars catches fire in that tunnel is a dark day indeed. I’m not sure the driver can even open the doors and for sure emergency services can’t get to it. They’ve made a concrete hole and called it a tunnel, that’s not what a tunnel is.

    I’m not sure what the point of it is, it’s probably an economic vessel of some kind to shift some money around. They haven’t accepted any orders and have only done that shitty Vegas thing. They say they are going to do more in Vegas, but I’ll believe that when I see it.