[-] CadeJohnson@slrpnk.net 16 points 8 months ago

gotta admit, that is a lot safer approach than trying some shit on the real thing

[-] CadeJohnson@slrpnk.net 8 points 8 months ago

The statistic of low Firefox use is based on accessing US government websites. Could it be that there is significantly LESS government site access by the population of users that prefer Firefox? As a corollary I recently read that game companies observed significantly HIGHER bug reporting from Linux users on Steam, not because there were more Linux-related bugs, but simply because that set of users were more likely to initiate bug reports. Of course Firefox is not Linux and Steam is not the world, but a statistic from a relatively narrow segment of the internet should not be assumed representative of the whole.

[-] CadeJohnson@slrpnk.net 3 points 9 months ago

Have you tried your hand at biochar? I know composting the chips for mulch is high value in a farm operation, but a few tons of biochar can work like a permanent upgrade - improving the soil permanently with one addition - though ongoing permaculture operation continues. I am about to make a biochar cooker out of two steel barrels - inner fuel chamber and outer draft shell. It would probably be more effective with wood scraps than chips though - some air passages through the fuel.

To test it out for myself, I made a miniature version documented at https://github.com/jcadej/TLUD-biochar-reactor (uses a gallon paint can for the fuel chamber. You could test it small and see how it does with wood chips. When I make my bigger version, I will add it to the github project. My rough idea is to cut one barrel down the side and squeeze it smaller and bolt it so it fits inside the other.

[-] CadeJohnson@slrpnk.net 2 points 9 months ago

I'd hate to think modern society is based on a giant elaboration of poker, but I can't rule it out - it MIGHT not be the worst outcome, but a pseudo-equilibrium far from the best. Every young person knows something accessible in the past is now lost to them - not sure what it is, but there is a hole. And yet, the social track laid out is almost unavoidable.

I traveled a good bit the past 20 years and I've experienced first-hand the really hard work and the immense gratification of simple farming. Nobody wants to live like that (at least so they think). Having done it, I can't even say I recommend it over what modern society seems to offer. But since the best option on offer is not a true equilibrium, as the climate is making abundantly clear, what is on offer may be illusory. An alternative equilibrium - tried and true - is worth considering when opportunity arises: subsistence farming. It is NOT simple or easy - don't wait until there is no other option.

[-] CadeJohnson@slrpnk.net 2 points 10 months ago

I have plain ol' Ubuntu LTS and I do not recall a Steam crash in a decade. Playing with Nvidia GPU on AMD Ryzen in recent years.

[-] CadeJohnson@slrpnk.net 2 points 11 months ago

These are some good points. The more traditional engineering disciplines have a depth of methods and practices that developed over time, and software engineering is - what? only maybe 50 years old or so? I have not worked with software engineers, but with all other sorts, so I know if there is engineering going on in software development there will be certain methods in place: preliminary designs that senior teams evaluate and compare, interdisciplinary review so the features of design that "work" for one objective also do not detract from others, and quality control - nobody works alone - every calculation and every sentence and every communication is documented, reviewed by someone else, and recorded permanently.

I can imagine that some software engineering efforts must bring some of these tools to bear, sometimes - but the refrain in software development has long been "we don't have time or funds to do it that way - things are moving too fast, or it is too competitive." Which maybe all that is true, and maybe it can all be fun and games since nobody can get hurt. So if game developers want to call themselves engineers regardless of whether they follow, or even know about standards of their industry (let alone any others'), no harm, no foul, right?

An old friend of mine wrote the autopilot software for commercial passenger jets - though he retired about 25 years ago. He was undoubtedly engaged in a project that nowadays would be dubbed software engineering. The aerospace company included him in the team with a whole slew of different engineers of all sorts and they did all the sort of engineerish things. But I don't have the impression that much software goes through that kind of scrutiny - even software that demonstrably deeply affects lives and society. In a way this is like criticizing the engineering of an AR-15; what were the engineers thinking to develop something that would kill people?! But it seems like with software, the development has effects that are a complete shock even to the developers: facebook algorithms weren't devised to promote teen suicide, it was just an unforeseen side effect for a while.

I think it is time for software engineering to be taken seriously. And there is professional licensing. The problem is that corporations are dubbing their staff as software engineers a lot of times, when there is no licensed engineer in the building and there are no engineering systems in place. It is fine for me to say that I engineered the rickety shelves in my garage, because I'm an engineer and therefore it must be so, but that is some sensationally bad logic. They could collapse at any moment - I'm a chemical engineer.

[-] CadeJohnson@slrpnk.net -3 points 11 months ago

Thank you for this correction. I will make a note that professional engineering has nothing to do with engineering - I don't know how I have been so confused for so long!

[-] CadeJohnson@slrpnk.net -3 points 11 months ago

I think engineers have been held liable for the soundness and fitness-for-purpose of what they "engineered" since ancient Rome - though they have certainly been called upon to engineer a greater variety of things in the past couple of centuries. And I think if someone proposes to engineer software, I am all for that! We could do with a great deal more of it in fact. And let's dispense with this perpetual disclaimer of warranty for merchantability or fitness for any particular purpose, and such terms. If an engineer designs it and it does not work, the engineer is generally held to be negligent and liable . . . except if they are a software engineer, of course.

[-] CadeJohnson@slrpnk.net -3 points 11 months ago

this seems to reflect the simultaneous co-opting of the titles "architect" (one who designs physical edifices such as buildings) and "engineer" (one who applies math and science principles to problems of infrastructure and industrial production). We all understand what is meant by design, but that does not mean a software design must be devised by an "engineer" or an "architect" anymore than an interior design (though there are also some self-styled "design architects" roaming about). So is it possible to say what is different about software development and software engineering without saying the engineer is an architect? Is it that software developers do not design anything (which in its simplest terms is 'artful arrangement')? That seems arbitrary - though I agree that there can also be a fine line sometimes between, say, architecture and structural engineering.

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submitted 1 year ago by CadeJohnson@slrpnk.net to c/diy@lemmy.ml

has anyone here ever experimented with an "electromagnetic" pump? If the pumped liquid is conductive and the piping is enclosed in a coil (think solenoid), and a current is passed across the fluid near the coil, then the magnetic field made by the coil should attract the fluid passing the transverse current (causing it to flow). As fluid flows toward the coil, new fluid starts passing current and so on.

Electromagnetic pumps are used in metal processing for continuous casting, but those are fancy and expensive devices. Could I pump seawater by wrapping a coil around a garden hose and pop-riveting a couple of electrical contacts into the hose on opposite sides next to the coil? I think regular "fresh" water would not be sufficiently conductive, but whatdoIknow? My longer term plan is to try pumping molten salt, but I want to learn on cooler stuff first.

I'm all ears!

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CadeJohnson

joined 1 year ago