mkwt

@mkwt@lemmy.world

• ⁨Comment⁩ on ⁨in fashion everything old is new again⁩ ⁨⁨1⁩ ⁨week⁩ ago⁩:

  Yeah. He’s just wearing some kind of standard Bajoran civilian uniform, right?

  (And the military Bajoran uniform is red)

• ⁨Comment⁩ on ⁨San Francisco to pay $212 million to end reliance on 5.25-inch floppy disks⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  802.11ax, clients just… (essentially) wait for a random amount of time, listen for a break in the signal, and take a leap of faith.

  Ethernet originally worked the same way, back when it competed directly against token ring. Ethernet won by being as reliable in real world scenarios while being cheaper to build out. Gigabit Ethernet was the first standard that insisted on full duplex only.

  Half duplex mode with the collision avoidance is still actively supported for 10/100, but it is becoming very hard to find an unswitched hub. So you may have to write up your own twisted pair cables.

• ⁨Comment⁩ on ⁨Trump cosplaying⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  E. coli is a coliform bacteria. That means it’s found in, you guessed it …shit. So E. coli is a great topic for a shitpost.

  How the E coli gets from the shit to the meat is left as an exercise to the reader.

• ⁨Comment⁩ on ⁨New car buyers driven to white or grey, with bright colours rarer than ever, data shows⁩ ⁨⁨5⁩ ⁨weeks⁩ ago⁩:

  I like white cars because they reflect more heat away from the car in hot, sunny days.

• ⁨Comment⁩ on ⁨GOTY⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Category: existential horror.

• ⁨Comment⁩ on ⁨HBO should use a different bumper for streaming.⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Why not just have the app dynamically generate the static with random numbers every time. There is no video file of white noise, and bonus the bumper intro is never exactly the same twice.

• ⁨Comment⁩ on ⁨Paralyzed Man Unable to Walk After Maker of His Powered Exoskeleton Tells Him It's Now Obsolete⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Here’s my guess. I don’t know anything about this particular device, but I have worked with medical devices.

  A powered exo-skeleton sounds like it might be a class II medical device. Being a medical device, the OEM was required to produce a safety risk analysis per ISO 14971 in the EU and 21 CFR 820 in the US. I don’t know what all was listed, but probably one of the safety risks was thermal runaway from the (assumed) lithium ion batteries.

  Lithium ion battery packs have a well known problem with occasionally overheating and catching fire. This famously delayed the launch of the 787 Dreamliner. This is also why you can’t put your phone or laptop battery into your checked luggage.

  In the original risk analysis, there will be a number of mitigation steps identified for each hazard. For the lithium thermal runway, these probably include a mix of temperature monitoring, overheat shutdown, and passive design features in the battery pack itself to try to keep the impacts of over temperature and fire away from the patient.

  So how does the price get to 100k? It could be some kind of unique design features that are now out of production and the original tooling is not available. The 100k cost is probably something like to redesign the production tooling, particularly if you have to remake injection molds.

  You can’t just use any off the shelf battery pack, because that would invalidate the risk analysis. You’d need to redo the risk analysis, repeat at least some amount of validation testing, and possibly resubmit an application to the FDA.

  TLDR: you can get some MEs and EEs together to solve this problem, but once they’re on the case, you can blow through 100k real fast.

• ⁨Comment⁩ on ⁨Paralyzed Jockey Loses Ability to Walk After Manufacturer Refuses to Fix Battery For His $100,000 Exoskeleton⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Medical devices are required to comply with 21 CFR 820 in the United States, which establishes quality management standards. This includes minimum standards for the software development lifecycle, including software verification and validation testing.

  In the EU, broadly equivalent standards include ISO 13485 and IEC 62304.

  If an OEM wants to do a software update, they at minimum need to perform and document a change impact analysis, verification testing, and regression testing. Bigger changes can involve a new FDA submission process.

  If you go around hacking new software features into your medical device, you are almost certainly not doing all of that stuff. That doesn’t mean that your software changes are low quality–maybe, maybe not. But it would be completely unfair to hold your device to the standard that the FDA holds them to–that medical devices in the United States are safe and effective treatments for diseases.

  This may be okay if you want to hack your own CPAP (usually a class II device) and never sell it to someone else. But I think we all need to acknowledge that there are some serious risks here.

• ⁨Comment⁩ on ⁨Boeing's 'final' 30% pay hike offer isn't good enough, union says⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Makes sense to me. The union leadership got seriously burned on the previous offer that they backed. They’re clearly not going to come back with something that’s basically the same, but some numbers tweaked.

• ⁨Comment⁩ on ⁨What prevents Linux from being installed on mobile devices?⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Another aspect to this is that Android is Linux, but it is not GNU / Linux. This is true both in the literal sense of not using GNU coreutils or glibc, and also in the broader sense.

  What I mean by the “broader” sense:

  • no X or Wayland
  • GTK or Qt support is something an application has to bring with them.
  • filesystem is substantially reorganized
  • users and system permissions setup substantially differently

  To the application programmer Android Linux looks like a completely different ball game.

• ⁨Comment⁩ on ⁨Pagers and walkie-talkies over cellphones – a security expert explains why Hezbollah went low-tech for communications.⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Also, Israel already assassinated someone via their cell phone way back in 1996.

• ⁨Comment⁩ on ⁨Mozilla exits the fediverse and will shutter its Mastodon server in December | TechCrunch⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Technically I think that’s still “put us first on the search bar” money. You’re giving the real under-the-table explanation.

• ⁨Comment⁩ on ⁨More⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  This is missing a “just right” image for reference, and so everyone can criticize the author’s cookie preferences.

• ⁨Comment⁩ on ⁨More⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  Uranium doesn’t usually glow in the dark? If you can see a blue glow, you need to get the heck out of there, or submerge it in a lot of water.

• ⁨Comment⁩ on ⁨Magic⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  1 + 2 + 3 + 4 + 5 + … = -1/12

• ⁨Comment⁩ on ⁨The Button⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  I went to labcorp for a while when I needed monthly blood draws for my doctor.

• ⁨Comment⁩ on ⁨Are there any negatives side effects to using PGP all the time with email?⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  —BEGIN PGP SIGNED MESSAGE— Side effects include all of your contacts calling you freakin nerd.

  —END PGP SIGNED MESSAGE—

• ⁨Comment⁩ on ⁨beams⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  No. I would like to go back to beans, please.

• ⁨Comment⁩ on ⁨This is how I feed my omnivorous fish⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  I sure hope you have some peer reviewed clinical studies to back up a controversial statement like that!

• ⁨Comment⁩ on ⁨US: Alaska man busted with 10,000+ child sex abuse images despite his many encrypted apps⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Well it probably wasn’t a Vic Mackey-style rubber hose attack, because it sounds like this chump is getting hauled into court.

• ⁨Comment⁩ on ⁨Microsoft finally officially confirms it's killing Windows Control Panel sometime soon⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  I’m thinking of highly niche industrial and embedded products who are likely to be left behind.

  A major traditional selling point for Windows has always been the backwards compatibility.

• ⁨Comment⁩ on ⁨Microsoft finally officially confirms it's killing Windows Control Panel sometime soon⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Yeah. This sounds a lot like some PM type thinks they’re gonna get rid of control panel, and they just don’t know what all is actually in there.

  And not to mention the custom control panel applets hanging around out there from who-knows-what vendors.

• ⁨Comment⁩ on ⁨Why are vegan and gluten free items more expensive?⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  A large part of food cost is processing.

  A regular burger patty is processed by butchering a cow, running meat through a grinder, and then pressing the grind into patties.

  A vegan burger patty has to combine multiple ingredients and seasonings with different preprocessing steps, and then it still has to be pressed into patties.

  Out of this, cow butchering is by far the most intensive and costly processing step, but the cost of that is amortized over many cuts of meat, not just the hamburger.

  The vegan patty has more things to process in it. And if you’re looking at Beyond or Impossible, then some of those things are fancy lab grown proteins.

• ⁨Comment⁩ on ⁨Justice Department considering push for historic break up of Google after landmark antitrust ruling: report⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  But the ads on search are the big revenue driver for Google overall. Presumably those stay with the Google Search subunit, and they would have plenty of cash to do whatever?

• ⁨Comment⁩ on ⁨Guess I'll km/s⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  This is actually pretty important to being able to solve engineering problems in the real world. Invariably, every little sub industry has its own cursed unit system. And dimensional analysis is great for solving real problems on its own.

  And if you get to a high enough physics level, they start setting hbar = c = 1 or G = c = 1, and you never have to worry about it again.

  I’m the mean time, it’s worthwhile to learn the trick to do this stuff fast-ish.

• ⁨Comment⁩ on ⁨Justice Department considering push for historic break up of Google after landmark antitrust ruling: report⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  But if they’ve only been found to monopolize search, how does that remedy the search monopoly? Presumably the new separate Google Search company would still have a search monopoly.

• ⁨Comment⁩ on ⁨8 Minutes⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  Only if the moon is up.

• ⁨Comment⁩ on ⁨Not safe to swim: Paris Olympics event cancelled over Seine water quality concerns⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  That would make any potential world record not comparable with previous iterations of the event.

  I’m more familiar with running marathon, where there are specific criteria that a course has to meet to be eligible for world record consideration. Along these, course must be generally on roads, and the finish line must be within a certain close distance of the start to mitigate wind effects.

• ⁨Comment⁩ on ⁨Chevron, in a blow to California, says it is relocating to Houston⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  Fun fact: Chevron occupies the old Enron building in downtown Houston (among other offices in the area).

• ⁨Comment⁩ on ⁨Why doesn't the American market provide efficient and effective health insurance like it does for car insurance?⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  Can only shop during a specific enrollment period

  With cars it’s relatively easy to determine if a particular collision occurred before or after you bought insurance. It’s also very hard to predict exactly when these commissions will occur. Consequently, it is not so easy to delay and only buy a policy when you already have a claim ready to go.

  With many progressive diseases, it’s much easier to wait and only buy insurance if you think it’s going to be expensive, but haven’t been diagnosed with anything yet. That’s why health insurance has open enrollment periods.