I have been in one. Its just a room with an air flow rating and slight positive pressure vs ambient. There's no entry control, no special clothing, no hair nets. There was visible dust on top of the equipment and no one seemed to care, not even the people who you think should. I honestly think its there for a check mark on the paperwork.
Honestly that might be ok for class 10000 (ISO class 7). HEPA filters do good work! At my work we use gowns, hair nets, booties, the works. However, we also changed cleaning companies once and didn't realize they were no longer sweeping the floor for a few months until visible dust bunnies started appearing in corners. Addressed that quick but not before we ran a few tests, still in spec! We also have local controls (flow hoods) over particularly sensitive operations.
We have class 100 (ISO class 5) space that's a lot more stringent, but even that is less sensitive than you might expect. Our semicon customers have a bad habit of taking our carefully bagged product out in their uncontrolled warehouse to check the serial numbers, but I'm not aware of any issues that arose from this.
Things get a lot more interesting when you start working with DUV and EUV wavelengths, as now you care about more than dust. We're adding an advanced molecular contamination cleanroom (AMC) where we'll need to start restricting perfume, deodorant, and cigarette use.
I've been in higher than 10,000 cleanrooms and it's not the dust on the desks they care about.
There are entry protocols around what you can take in, how you swab it, and so on. Also, specific instructions around how often to go from sitting to standing, clothing materials under your smocks, and everything else.
I absolutely love how once things get down to 1 AWG they realized they had a problem and just started adding zeros. Then that got a bit silly, so when they reached 4/0 AWG they switched to KCMIL measurements and the numbers start going up.
I’d look for a more complicated and nuanced explanation than that.
Maybe, there are perverse incentives in scientific publishing (ever heard of publish or perish?), and insufficient checks and balances, and it’s hard to do the right thing and easy to do the wrong thing.
The more nuanced explanation gives you more traction for incremental improvement. One historically easy way to get people to do the right thing is to make the right thing easier.
People used to dump their used motor oil in the nearest stream. Now every auto shop is required to accept used motor oil and recycle it. Doing the right thing is so easy that you’d have to be crazy to do the wrong thing.
The aliens are actually pan-dimensional light beings. That is why they are afraid of high quality cameras, if they get caught in a photo they are stuck here forever. Running this algorithm on pictures of UFOs is actually an intergalactic warcrime.
I wish there was study based on whether multi-vitamins help for those of us who are professional sitters (eg, in tech, so we sit on our ass all day), and who most of the time do NOT eat healthy diets, and do not get enough exercise.
In those circumstances, does a multi-vitamin a day improve things?
There's so many variables at play to give blanket statements.
MTHFR mutations are interesting to research. I've got polymorphism (checked via a DNA test), and once I cut out the folic acid supplements and fortified cereals, I started feeling much better. The missus also has polymorphism, and whilst her blood results made her seem anemic, the prescribed B12 shots gave her a mental health crisis due to elevated homocysteine as a consequence.
That's not to say "supplements = bad", but having a good understanding, self-awareness and figuring out your own physiology is more important than following blanket statements said by others. This is also why some people with ADHD respond well to stimulants and others don't. People vary wildly.
Multiple mutations of the MTHFR gene means that a lot of blanket statement health advice doesn't necessarily apply. It's also not all that uncommon, and it's something that most docs in the UK aren't familiar with. High incidence in Ashkenazi Jews (which I am).
It doesn't "diagnose", you look at what the genes express in terms of alleles. Lots of information publicly available from reputable sources.
I'm not here to push recommendations of DNA services, but the better ones allow you to export your raw DNA data for further scrutiny if they don't allow you to just browse it by gene number via a web app. If you're interested, look it up. Likewise, watch out for the one that handled a security breach crappily recently.
It's one thing to "support" it, it's another to make components actually available to make repairs. I remember some people testing out a direct screen swap between two identical iphones, only to find out they didn't work after the swap. So even if you can get a replacement component, do you have the management software to update the eeprom to say "hey, the screen with this serial is good to go".
if you go to https://selfservicerepair.com you will find you can only get parts for iphone 12 or later. There is no parts for e.g. iphone 11, iphone XR, iphone XS.
For 'iPhone 12 mini TrueDepth Camera Bundle' you have to pay $280 in EU countries + shipping I guess. If your iphone 12 mini breaks in ~2 years from now probably will be cheaper to buy just working second hand iphone 12 mini.
> If your iphone 12 mini breaks in ~2 years from now probably will be cheaper to buy just working second hand iphone 12 mini.
yes, this is a general problem with all repair. n=1 repairs are very expensive in terms of labor and logistics. making a million pixel phones in a factory is cheap, mailing someone a camera board and having a technician disassemble the phone and solder a part and re-seal the phone for waterproofing is very time-consuming.
if repairs are only financially viable by using knockoff parts with inferior quality, that's a problem, that's a market failure.
easy answer is tax new devices heavily so that repairing a device is relatively more attractive. but I think people won't like the idea of 50-100% tax on new devices.
there's always a price for your morals - nobody is buying a new phone at $100k tax per phone, and would not support such legislation. now we are just haggling over the price.
$300 for component that real price value is <10$ (there are many sources that show what's price of each component in iphone) is not market failure is just apple greed + their walled garden. I don't expect them to sell me this truedepth camera for 10$ but for $50-100 they still make a lot of profit. And I should be able to make repair myself or go to 3rd party shop give such component and tell please swap it - apple shouldn't force me to use authorized repair shop only because they signed NDA and have access to some artificial tool that just signs component even if this is already genuine delivered by apple.
Taxing is not solution I don't want to tax cars 100% so even though fixing cost the same supposed make me feel better because it's then just 10% of whole product instead of 30%. Car industry has right to repair and it's a solved problem - even though cars have bigger safety considerations.
This has nothing to do with apple in particular, it’s cheaper to buy a new Samsung than to repair your old one too. Literally the entire point of the post was discussing the problems inherent to n=1 repair vs the economies of scale provided by mass manufacturing or board level repair.
I disagree, I repaired in the past my old iphone se cheaply (replacing battery) or samsung sg2 (broken usb) and sg4 (broken camera). I could buy components either locally or cheap from aliexpress. In south east asia many wizards can even fix your macbook and even upgrade ram, ssd as a bonus.
Repair can be cheap in the same way as car repair can be cheap. Currently iphone repair cannot be cheap because of their DRM.
You mentioned before that cheap repair cannot be done because of more expensive labour. But I mentioned that authorised repair shops quotes me ~300euro for repair and apple for just ordering single component wanna charge me ~280usd - it's obvious they just price component so expensive to make it not worth making repair yourself.
It's a good read, just know what you are in for.