• CurlyWurlies4All ( CurlyWurlies4All@slrpnk.net ) 
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    2 years ago

    The cost of digital advertising cannot be justified by its effectiveness (or rather lack there of). We’ve collectively spent hundreds of billions of dollars creating the infrastructure for invasive hyper targeted ads that do not get better results than simple billboards and terrestrial TV ads even now. We’ve created a global economy of marketing, media, advertising and sales solely reliant on technofeudalist overlords who’ve provided very little actual improvement of anything.

  • Honytawk ( Honytawk@lemmy.zip ) 
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    2 years ago

    The world is littered with fake empty buildings used to obscure phone line junctions and internet provider stuff.

    Almost every neighbourhood has one. But they look like normal houses, so you can never tell unless you know where to look for.

  • Talaraine ( Talaraine@fedia.io ) 
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    2 years ago

    Most of hacking is done by mass effort with maybe a couple percent of people that aren’t doing basic things to protect themselves being affected. That couple of percent is enough to keep the hackers flush. (So please, follow basic cybersecurity steps, people.)

    The plain truth of the matter, though, is that if a hacker or group of hackers is targeting someone individually for reasons, that person is in real trouble.

    This has been a PSA for everyone chasing fame and clout.

    • MagicShel ( MagicShel@programming.dev ) 
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      2 years ago

      I miss the days of Anonymous (there was a sub group of the actual hackers whose name I can’t recall and a bunch of wannabes I guess providing them a crowd to lose themselves in) doing justice hacks. Not that they were always on the right side of things, but now everything is state actors trying to bring us all closer to Armageddon.

    • kevincox ( kevincox@lemmy.ml ) 
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      2 years ago

      Tips for being secure online:

      1. Use your browser’s password manager to generate random passwords.
      2. In the rare case you need to manually enter your password into a site or app be very suspicious and very careful.
      3. Never give personal information to someone who calls or emails you. If necessary look up the contact info of who called you yourself and call them back before divulging and details. Keep in mind that Caller ID and the From address of emails can be faked.
      4. Update software regularly. Security problems are regularly fixed.

      That’s really all you need. You don’t even need 2FA, it is nice extra security but if you use random passwords and don’t enter your passwords into phishing sites it is largely unnecessary.

        • kevincox ( kevincox@lemmy.ml ) 
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          2 years ago

          The reason I say browser password manager is two main reasons:

          1. It is absolutely critical that it checks the domain to prevent phishing.
          2. People already have a browser and are often logged into some sort of sync. It is a small step to use it.

          So yes, if you want to use a different password manager go right ahead, as long as it checks the domain before filling the password.

          • dev_null ( dev_null@lemmy.ml ) 
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            2 years ago

            What do you mean a password manager that checks the domain? Isn’t the auto fill based on the domain? I can’t imagine how a password manager could fill a password without checking the domain, it wouldn’t know which password to fill after all. Do any actually exist?

            • kevincox ( kevincox@lemmy.ml ) 
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              2 years ago

              There are some password managers where you need to either manually look up passwords and copy+paste or autotype them or select the correct password from a dropdown. Some of these will come with an optional browser extension which mitigates this but some don’t really tract domain metadata in a concrete way to do this linking.

              Some examples would be Pass which doesn’t have any standard metadata for domain/URL info (although some informal schemes are used by various tools including browser-integration extensions) and KeePass which has the metadata but doesn’t come with a browser extension by default.

    • corsicanguppy ( corsicanguppy@lemmy.ca ) 
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      2 years ago

      I fear too many universities are businesses designed to fund seminars; and students graduating are whether an afterthought or an actual negative for them.

      It was related to me that, because they want to keep their customers, one can solve any problem at uni - grades, minor victimless crimes, etc - simply by offering to take more courses. The only problem money can’t solve is the one where the student has no more money, and it’s over quickly after that (saw that one happen).

      • HobbitFoot  ( HobbitFoot@thelemmy.club ) 
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        2 years ago

        It is far worse than that.

        Universities have a lot of metrics that they are judged against that don’t lead to a quality education. Research doesn’t lead to good undergraduate students. A good pass rate just means the curriculum is soft enough to keep don’t students from failing.

        So you have university presidents who are incentivized to increase prestige and they aren’t going to focus on the quality of education because that doesn’t lead to better metrics. If presidents try to defend their universities’ way of teaching, they get replaced by those who follow the system.

        • Why I likes the ABET requirement for engineering. Still have an 80% fail rate due to the standards, and you get audited for coursework.

          I have yet to meet an employer who will hire an engineer from a non-ABET school.

  • rbesfe ( rbesfe@lemmy.ca ) 
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    2 years ago

    Building HVAC engineering (equipment sizing, ducting design, etc.) has been largely handwavy bullshit for a very long time and only recently has moved towards any sort of precision. Not uncommon to find boiler plants that are 3-4 times the maximum heating load in the winter, or fans running at 100% 24/7 when code only requires half of that.

    Costs just get passed on to tenants so there was never much motivation to do better, the only reason building owners are moving now is because of government regulation and incentive programs.

    • belathus ( belathus@bookwormstory.social ) 
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      2 years ago

      I used to work in HVAC. I remember we had a small cold room that was struggling to maintain temperature, as in, design was supposed to be 0°F but it couldn’t get below 36°F. There was a large hole in the box that was undoubtedly the cause of the problem, so I asked the installer how they accounted for that. “Oh, I doubled the infiltration value.” When I tried calculating the actual losses it was way, way higher than the infiltration value. Like, the room needed someting like 3-4 times its total refrigeration capacity to reach target with a giant fucking hole in the box.

      No idea who thought putting a giant hole in the box was a good idea.

    • I work in building science. It’s obscene how little actual design and quality control goes into residential homes.

      The typical design is just one step above being illegal, and people are often scared off of doing anything more than that by the threat of increased cost. However, they don’t realize that they pay for it either way; either on their mortgage, or on utilities. Only one of those you can actually own in the end.

    • Adding to this, you probably don’t know how good your speakers are or not because you’re listening to your room, not your speakers. If you have given zero thought to acoustic treatment where you listen to music, you definitely don’t need to upgrade your audio equipment in any way. No amount of money you spend on equipment will help you enjoy music more until you treat your room

      • JokeDeity ( JokeDeity@lemm.ee ) 
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        2 years ago

        Who the fuck is up upvoting this dumb take? So you’re actually trying to argue there is no difference between a pair of $20 speakers and a $500 surround sound system with amp if they aren’t in the perfect room? That’s some music snobbery on a level I’ve never seen before.

    • JohnSmith ( JohnSmith@feddit.uk ) 
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      2 years ago

      Master Handbook of Acoustics is your friend if you want to learn what to do to your room. Overkill for most, admittedly, but it contains everything you need to know.

        • JohnSmith ( JohnSmith@feddit.uk ) 
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          2 years ago

          I made couple of bass tramps tuned to the room’s main resonant frequencies, which I measured. I followed instructions from the book.

          I added sound absorber panels to the walls and ceiling to kill immediate reflections from the main speakers plus a sprinkling of additional panels to kill reflections and also act as decoration. I also needed to move one radiator because it was in the worst possible location for my setup.

          The room got thick curtains to improve absorption, and they also darken the room as it is dual use music listening and home cinema room. A few defraction elements went into the ceiling for a good measure. The ceiling is made of custom panels that I made myself from wood and fabric to allow sound energy through to the various acoustic elements behind them.

          I also spent a fair amount of time with subwoofer placement, but in the end it became a bit of a compromise between sound and placement of furniture. Nothing a bit of signal processing can’t deal with, mind.

      • Not quite, conductor diameter is important to supply proper current, which will change depending on the impedance of your speaker. There are other values like inductance and capacitance in a wire that could affect how your speaker sounds. The good news is that you can pretty much buy any cheap 16 ga copper speaker wire and not worry about it, as it would take effort to make a speaker wire that sounds bad (and those companies are the type to try to charge you $1000/ft for it!)

        • BCsven ( BCsven@lemmy.ca ) 
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          2 years ago

          Thanks.

          I always shy away from the ad hype of products, I have been in different industries, and have seen that a $ product vs $$$ product is sometimes identical innards, and a refreshed outer…which didn’t cost the manufacturer anything extra.

          I have tried to explain this to my spouse, but she will still gravitate to buying the more expensive; equating cost with quality

  • rodbiren ( rodbiren@midwest.social ) 
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    2 years ago

    A whole bunch of welds in nuclear reactors are visually inspected using cameras duct taped onto the end of incredibly long poles which also get duct taped together. This would be the inside of BWR plants near the fuel and jet pumps. There is also an “art” to moving the cameras and poles around to get the shots you need. And if you get stuck the talented people know how to get you unstuck. There are also cameras just duct taped to ropes that the camera handler “swims” to certain spots.

    Don’t get me wrong, we have cool ultrasonic inspecting robots as well, but I was absolutely blown away by what visual inspection looked like in practice.

    PS: The high dose fields make the camera look like it is being blasted with colorful confetti because of the high energy particles bombarding the camera module.

  • bloodfart ( bloodfart@lemmy.ml ) 
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    2 years ago

    ~Things people don’t want to know~

    Putting a layer of tissue between your butt and the toilet seat doesnt provide enough of a barrier against microorganisms over the time it takes to shit or piss to prevent transmission.

    Keeping the air dry reduces both the length of time microorganisms can live outside your body and the length of time that vapor particles can harbor them.

    The n95 (and other) rating(s) are over time in free, circulating, open air. Derate safe exposure time sharply for use inside or in spaces with stagnant or unmoving air.

  • corsicanguppy ( corsicanguppy@lemmy.ca ) 
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    2 years ago

    75% of American drinking water needs treatment to reduce particulate and parasites, and the treatment additive used to render the water safe is produced at a single chemical plant located in an area of severe flood risk – which means that a flood could take it offline for a day or two, or damage it for weeks.

    (Efforts to build a second site recently fell through due to ever-changing regulations. Of course they’re stockpiling it in some mountain bunker, I’m sure)

    The next Katrina could give us a brain-worms infestation via tap-water.

    • Waterdoc ( Waterdoc@lemmy.ca ) 
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      2 years ago

      I don’t know the details about alum production (assuming that is what you are referring to), but there are many alternative coagulants available now. Sure the supply logistics would be incredibly challenging and many people would have to boil their water or use point-of-use filters, but this take is pretty doomer in my opinion. Most plants use alum because it’s cheap and easy, not because it’s their only option.

  • Jo Miran ( JoMiran@lemmy.ml ) 
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    2 years ago

    I want to comment here so bad but given that I am one of two people that know and one of maybe a dozen that suspect, it would definitely violate multiple NDAs.

    ProTip: Invest in off-grid solutions for your home.

    • mozz ( mozz@mbin.grits.dev ) 
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      2 years ago

      There are more than 2 people that know that Texas’s power grid is a teetering disaster waiting for the right event to crumble and break in unfixable fashion

      (Or water, water’s probably even more sketchy. Look up the incident in the UK where they accidentally put a shitload of treatment chemicals in the main water supply and a whole bunch of people got poisoned. Harder to do off grid solutions for though.)

      • Jo Miran ( JoMiran@lemmy.ml ) 
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        2 years ago

        Ha! I used to live in Austin and I don’t fly, so Buc-ee’s and Cracker Barrel hold a special place in my heart. Unfortunately what I am talking about is a US thing, not just a Texas thing.

  • Infynis ( Infynis@midwest.social ) 
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    2 years ago

    With the exception of at large buildings in dense city centers, just about everywhere else, utilities enter a building at just some point on the back, out in the open. This includes utilities that feed alarms and security cameras.

    While some places will have systems in place for situations where these outside connections have been severed, like independently operated cameras on an intranet, cellular data backup for alarms, electrical generators, etc., most places don’t, so successfully circumventing their security is just a matter of cutting all the cables on the back of their building at the same time, and then being gone before they notice

    • kevincox ( kevincox@lemmy.ml ) 
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      2 years ago

      I’m not an expert on modern alarm systems but it seems that it is very common and fairly inexpensive to have cellular data backup. Not every system has it, but many do. In that case cutting the main connection will likely result in someone appearing on site fairly quickly.

      Many cameras also have some form of local buffering. So even if you are gone before someone does show up you still may find yourself recorded.

      But at the end of the day just put a bag over your head and you can be gone by the time anyone shows up without leaving a meaningful trace. Other than the very top-end system security systems just keep the honest people honest.