ganyu · HackerTrans

ganyu

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hace 10 mesesdiscuss

So TL;DR,

1. Any substance that has most atoms covered by Fluoride are 'PFAS'. 2. C8 is strictly speaking PFOA (by-definition). 3. C6, and all other acids that has similar chemical properties to C8, can all be generically classified as PFOA-like materials. But for ease of communication people also call them PFOAs or just short for PFOA.

4. PFOAs are crucial for manufacturing Teflon. 5. The problem is manufacturers just dump waste water from PFAS production plants (containing PFOA) without post-processing into natural water bodies and let these toxic substances participate in the food chain and eventually land in our own bodies.

hace 10 mesesdiscuss

PFAS is short for 'Per- and poly- FluoroAlkyl Substances'. The Teflon that's used on your pans, which are 'poly-' materials, comes in extra long chains (hundreds of thousands of molecules). Most of its chemical bonds are hidden behind the extremely reactive Fluoride atoms (so if Fluoride is bonded onto that position, it's hard to take it off) and are extremely inert, so they don't interfere with typical biological reactions, thus are perfectly safe.

C8 is known as PFOA (perfluorooctanoic acid). Per for its chained molecule shape (no carbon side chains), 'fluoro' for the F part, 'octanoic' for the 8 carbon atoms, and 'acid' for its chemical property. Unlike Teflon:

  - C8 has a really small molecular mass, making it easier to flow around your body participating in all kinds of biological operations;
  - It is an acid (having the carboxylic '-COOH' group) and can pretend to be all kinds of acids and actively take part in reactions. Once they start to get inside, the consequences can be unpredictable and devastating.
  - All other atoms on C8 except for the last -COOH group are covered by fluoride atoms. This means that C8 is not biodegradable (no enzyme can break apart the C-F covalent bond since it's bond energy is really too high), and when it gets into the environment, it stays that way.

C6 has a highly similar chemical property akin to C8 (it's a carboxylic acid, and has all atoms covered by fluoride), so is equally harmful.

el año pasadodiscuss

Let's just say Windows 11 is a complete different OS compared to Windows 7 lest 10. That's still not counting Windows 11 being a new OS every couple of months, packed with brand new AI features that literally breaks your entire workflow because it's "more AI".

el año pasadodiscuss

Bear in mind that "any two high-dimensional vectors are almost always orthogonal".

hace 2 añosdiscuss

I believe they clear out the launch site within a few kilometres so nobody gets hit by random concrete debris or just melt away, literally. The control centre is probably invitational.

But you can freely watch them live on Twitter. Just follow the official @SpaceX account.

hace 2 añosdiscuss

i'd prefer the term 'less experienced' but yes.

hace 2 añosdiscuss

Most of those devs back in 2011 were rookies, and many still are now. It would've been lucky enough for them to have even heard of the word 'asymmetric encryption'. And you can still find many public APIs in the WeChat docs (in 2022) that uses hand-written AES stuff that, unfortunately, uses ECB.

Back in those days where the CN internet infrastructure as we see today was laid down, devs and PMs literally didn't know for sure what were they doing, but they still worked overnight because it the new features must be shipped before next weekend.

And since the services worked pretty well until today it's kinda better to keep the s__tpile there and don't change it. Also there's a lot of unmaintained 'PWA's in the wild that relies on legacy APIs that you dare not to break.

hace 2 añosdiscuss

While it is most proper and convenient to use these out-of-the-box products for fit scenarios,

Doing so will at the very least not help us with our interviews. It will also restrict our mindset of how one can make use of LLMs through the distraction of sleek, heavily abstracted interfaces. This makes it harder, if not impossible for us to come up with bright new ideas that undermine models in various novel ways, which are almost always derived from deep understanding of how things actually work under the hood.

hace 2 añosdiscuss

Can I get a guarantee to be accepted in this batch if I mention all 3? :P

hace 2 añosdiscuss

Devs are forced to do something by the manager to please the skip manager. Teams do things the hard way to make it look as if they're actually doing things. Organizations hide from leadership what users really like lest the org got disassembled because they were creating literal crap. And leadership went to marketing team to cover this all up from the investors. Traders would buy in these stocks just because these big companies have good marketing to pretend they were making the right decisions.

Most if not all big companies without tasteful people would eventually turn into monstrosities like this. Everyone were telling 'stories' around 'stories' that fold into a tangled web of everyone else, but sooner or later one day the bubble's going to pop, and down the stocks be gone.

People with bad tastes aren't the worst to deal with. They have taste, it's just that it's different from others'. Tasteless people will do anything in their power to keep the wheels turning, and that means to let tasteful people surrounding them surrender their tastes, so everyone can and will become tasteless people who would do anything to keep the wheels turning.

hace 2 añosdiscuss

AOAI literally has these compliance stuff (or what they market as 'enterprise-level security' features) so they're constantly 1-3 months behind OAI.

And no. This is not Azure AI Studio. You can't get a decent free trial working in it without getting through a pack of resource creation wizards.

hace 2 añosdiscuss

At least 10^4 times slower than raw code, i think

That makes HE anything but Swift (

hace 2 añosdiscuss

One can already see the beginning of AI enslaving humanity through the establishment. Companies work on AI get more investment and those who don't gets kicked out of the game. Those who employ AI get more investment and those who pay humans lose confidence through the market. People lose jobs, get harshly low birth rates while AI thrives. Tragic.

hace 2 añosdiscuss

Say some gigantic piece of function has 600 lines of code that does logic this, logic that and logic this and that. Suppose one day your PM goes into your office and request that a certain special case be added to this feature.

You do not further increase the complexity of this function by having one or two variables in the front, several if-elses in the middle not to mention a couple gotos.

You take these special cases and the most relevant logic away into yet another function, document it and hence ensure the changes to that 'special logic' do not mess up with the rest of that feature.

hace 2 añosdiscuss

Can we play Bad Apple with it?

hace 3 añosdiscuss

Not most, not optimal, but leveraging the efficiency prowess of LLMs will definitely keep you alive longer before being replaced by one of those AIs...

hace 4 añosdiscuss

When people in the U.S. are arguing about why their govts should need a warrant to spy on peoples phones, people in PRC are required to install an app that literally spies on them.

Surveillance is really going in its worst way, if there's not a worse one.

hace 4 añosdiscuss

It is because the people who do the regulations are the people who are regulated. It's like having a root user set up a SELinux policy for himself.

hace 4 añosdiscuss

Legislation states that the lease is automatically renewed (40yrs, 50yrs or 70yrs depending on how the land was purchased) for residential housing, but there have been rumours saying that related laws will change so the property will be taxed during renewal.

Considering that commercial housing started in PRC in the 1980s and the first batch of houses aren't technically expired yet, I think it's pretty hard to say what exactly will happen.

hace 4 añosdiscuss

+HPSquared For total value it's up to 80%, and when comparing to income you can borrow up to 50% of the (before tax) monthly income, for up to 30 years.