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f38zf5vdt

1,337 karma · joined December 4, 2019

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f38zf5vdt··on Most demographers now predict that human population will plateau
If that were true birth rates in places like Japan, with chronically depressed real estate values, would be skyrocketing over time. But it doesn't seem to be the case: more educated people appear to be less apt to have children.
f38zf5vdt··on DOJ, SEC Investigate Tesla over Secret Glass House Project
https://archive.is/wYXKL
f38zf5vdt··on ISPs should not police online speech no matter how awful it is
Iran executes pedophiles, but I don't have to love the Iranian regime.
f38zf5vdt··on ISPs should not police online speech no matter how awful it is
If they choose not to host a platform that they don't like, isn't that free speech? Ironically, appealing to authority to enforce an internet service provider to provide speech they don't want to transmit seems like an imposition on a private entity operating freely.
f38zf5vdt··on ISPs should not police online speech no matter how awful it is
There is not a country in the world that does not believe some forms of speech are worth censoring. In most of the world, CSAM is treated similarly because they don't believe people should spread depraved images of other humans being harmed. US Federal law treats animal abuse imagery in this way: https://www.law.cornell.edu/uscode/text/18/48
f38zf5vdt··on ISPs should not police online speech no matter how awful it is
Yeah, sheesh. KF is a website that gleefully reposts terrorist murder videos treated with the same legal penalties as CSAM in other countries, and during the reign of ISIS and the Taliban I don't recall people sitting around defending the need for that particular free speech.

https://en.wikipedia.org/wiki/Kiwi_Farms#Christchurch_mosque...

edit: By the way, for all those people ripping on the ACLU and saying "they lost their way" below, they're actively defending 230 against claims of online-terrorism-by-proxy.

https://www.aclu.org/news/free-speech/section-230-is-this-th...

f38zf5vdt··on Espresso coffee mitigates the aggregation of Alzheimer′s associated tau protein
Are you thinking of cafestol? Cafestol and kahweol are lipophilic terpenes that are normally lost in filtration. They are thought to be cardiotoxins that contribute to the premature deaths of elderly unfiltered coffee drinkers. [1]

[1] https://www.hcplive.com/view/filtered-unfiltered-coffee-cont...

f38zf5vdt··on Signal walks the line between anarchism and pragmatism
Yet, remarkably, many others will identify with:

> The rising intolerance of wrongthink on the right has been written about extensively but I’d love to read a sympathetic, anthropological investigation into it.

> I say sympathetic because I don’t believe you can understand anything without really seeing how a reasonable person could come to those same conclusions.

We are diving deep into the irony of bifurcated political systems where the two groups simultaneously believe themselves to be victims of their opposing teams rather than circumstance and systemic failures.

f38zf5vdt··on Twitter has started blocking unregistered users
Yeah, it went down a few hours after making that post.
f38zf5vdt··on Twitter has started blocking unregistered users
https://bird.makeup

https://sr.ht/~cloutier/bird.makeup/

f38zf5vdt··on Twitter has started blocking unregistered users
Nitter and Mastodon bridges are still operational.
f38zf5vdt··on Canada plans brain drain of H-1B visa holders, with no-job, no-worries permits
For all those taking this seriously, the parent comment was sarcastic and this comment is almost a direct quote from Dr. Strangelove about how to repopulate the Earth after a nuclear apocalypse.
f38zf5vdt··on Plastics are poisoning us
Ester bonds are not usually dangerous. Wait until you find out what all the natural and synthetic flavorants inside your food are!

As far as polyesters go, the main cause for concern is the endocrine disrupting effect of polyethylene terephthalate[1] and the inability of PET to be broken down completely, leading to microplastic pollution. By contrast, PLA can be broken down by heat or a select number of micro-organisms, and the lactic acid monomer used to produce it is non-toxic. The polymer is formed by a simple condensation reaction to form ester linkages, releasing water. Esters are a very common and generally benign moiety found everywhere in nature, for example in cutin found in plants, forming the rigid exterior of cells exposed to the elements. [2]

[1] https://en.wikipedia.org/wiki/Polyethylene_terephthalate

[2] https://pubmed.ncbi.nlm.nih.gov/11217409/

f38zf5vdt··on Debris found came from missing Titan sub, says friend of passengers
A truly HN discussion -- what percentage of the occupants would be ash and what percentage of the occupants would be molecularly sheared viscous people fluid that rapidly disperses. The oxygen tank would rupture and provide an ignition source too.
f38zf5vdt··on Oceangate Statement, “We now believe that [all crew] have sadly been lost.”
Hydraulics don't get hot while in use unless you introduce air into the system, in which case they do get hot and explosive. This is called hydraulic dieseling and microdieseling. The passengers would have been surrounded by oxygen and CO2 gas, and the oxygen tank would rupture as soon as the capsule imploded.
f38zf5vdt··on Oceangate Statement, “We now believe that [all crew] have sadly been lost.”
Yeah, it would be curious (if morbid) to see what happens to something like an animal carcass. In most cases of submarine failure at depth e.g. the USS Scorpion no bodies are ever found.
f38zf5vdt··on Oceangate Statement, “We now believe that [all crew] have sadly been lost.”
That accident was only 132 psi. A diesel engine causes combustion at around 300-500 psi. This accident was 3000-6000 psi, so I think it's safe to assume that the organic matter would combust almost instantly.
f38zf5vdt··on Oceangate Statement, “We now believe that [all crew] have sadly been lost.”
Probably combusted? At 400 atms their biomass would compress into a gelatinous hydrocarbon fat blob with the oxygen present, resulting in automatic combustion. The amount of compression their bodies would experience is an order of magnitude greater than a diesel engine cylinder. The explosion would immediately be quenched by the surrounding water and the only thing remaining of the occupants would be ash.

This would happen on the order of milliseconds.

f38zf5vdt··on Ask HN: How to Break into AI Engineering
The maths are not actually that complicated. 99% of what pytorch is doing is matrix multiplication and addition with n-dimensional arrays (tensors). For backprop you need a very limited understanding of calculus. [1] Stuff like sigmoid/softmax is also straightforward and you can grok it from a 5 minute youtube video. [2] If something doesn't make sense, just ask ChatGPT to walk you through it.

There is a lot of other complicated math that you will need when reading papers because people writing AI papers like to overcomplicate a lot of things that can be represented in 5 lines of pytorch.

[1] https://towardsdatascience.com/understanding-backpropagation...

[2] https://www.youtube.com/watch?v=Qn4Fme1fK-M

f38zf5vdt··on Ask HN: How to Break into AI Engineering
1. Log onto OpenAI

2. Prompt ChatGPT for "how do I make a pytorch program that learns to do <some task>"

3. Ask ChatGPT for code and for it to explain the code

4. Run the code on Google colab, if it doesn't work, ask ChatGPT why and keep rerunning it until it does

5. If you find some API that's too new for ChatGPT to know about, just paste in the API documentation and then ask ChatGPT to propose some code using it

ChatGPT is wrong a lot, but if you keep badgering it, eventually you will get a solution that works. It's like having a tutor standing next to you that you can ask questions to, I can't think of a better way to learn even if it's wrong on occasion.

f38zf5vdt··on John Carmack on shorter work weeks (2016)
> This particular article does touch on a goal that isn’t usually explicitly stated: it would make the world “less unequal” if everyone was prevented from working longer hours. Yes, it would, but I am deeply appalled at the thought of trading away individual freedom of action and additional value in the world for that goal.

Am I the only person appalled by Carmack's apparent privilege here? In an era when a CEO is routinely making 300x the wage of an average worker, and sometimes thousands of times more, giving people the option to work less for the same amount of wage seems like one of the few ways we can force the ultra-rich to give back? No one is forcing people to work 7 hours and they could easily work more if they wanted to, but reducing the minimum amount of toil required seems to be a net benefit to everyone who is not insanely wealthy.

f38zf5vdt··on Bluesky's AT Protocol - Federation Architecture Overview
Yeah, I have read about the things they want to do which are mostly cryptography related and which have absolutely zero reasoning as to _why_ they can't be done with ActivityPub. Signing all your messages? Yeah, you can append Ed25519 signature chains to any ActivityPub message. You could publish your base public key when creating an account. You could make software that hides all this beneath an abstraction layer so the end-user never has to deal with it. Exporting all your data and uploading it to another server is something you can already do with Mastodon. E2EE message? Coming soon to Mastodon. It's all things you can do _very easily_ on top of a fault tolerant federated public messaging system.

ActivityPub of course uses the same cryptographic certification virtually all the web does, just TLS/HTTPS and relies on the host cert to be valid. But if you wanted to add further levels of verification like pubkeys and sigs, there's absolutely nothing stopping you.

f38zf5vdt··on Bluesky's AT Protocol - Federation Architecture Overview
I still don't comprehend why Dorsey didn't just try to make the largest ActivityPub server on the web. Instead we get a haphazard rewrite of everything ActivityPub has already solved and a zany "you need an invite to get into this club" airdrop that feels dated to gmail 20 years ago. The service feels too much like "Elon bought Twitter, now we need to make Twitter again". That Dorsey is the principal investor makes it hard to think that it is anything else.

The only market it seems to be gaining traction in from my perspective is millennials who have nostalgia for old Twitter -- and as someone who grew up with old Twitter, I can say I don't really miss it.

f38zf5vdt··on Tesla Again Paints a Misleading Story with Their Crash Data
It's written by Brad Templeton, a professional writer and consultant on self-driving vehicles since 2007. He owns 21 patents on self-driving vehicle technology.
f38zf5vdt··on Texas lawmakers advance bill to force schools to display Ten Commandments
Not American, but Texas seems to be USA Hungary, i.e. continually advances laws that are fascist that encroach on the constitution with the hopes of one day overthrowing it entirely.
f38zf5vdt··on Indian government empowers itself to “fact check,” delete social media posts
One of the more bizarre parts of the Musk-Twitter saga has been Musk's unyielding support for censorship of tweets critical of Modi. [1] I don't really understand why someone who claims to be dedicated to free speech would ever take such a position? Does he intend for his "Everything App" to dominate South Asia rather than North America?

[1] https://theintercept.com/2023/03/28/twitter-modi-india-punja...

f38zf5vdt··on Arrest made in SF killing of Bob Lee – alleged killer also worked in tech
Come hang with us refugees at sigmoid. :)

https://sigmoid.social/public/local

f38zf5vdt··on Arrest made in SF killing of Bob Lee – alleged killer also worked in tech
I would recommend just never going on Twitter, for any reason. People are less racist on 4chan these days.
f38zf5vdt··on Arrest made in SF killing of Bob Lee – alleged killer also worked in tech
Isn't it this way in almost every major urban US area? I was in St. Louis for a conference and got robbed, after I reported it to police and told them I had the current location of the suspects because they stole my phone and location services was still on, the police laughed at me and told me "what do you want us to do, go bust some doors down?", then instructed me to file a report but explained it might not be worth it to even bother doing so because there was almost a 0% chance of my stolen goods being returned.
f38zf5vdt··on Arrest made in SF killing of Bob Lee – alleged killer also worked in tech
Thank you. There are so many sketchy things going on with Square/Block that some bad actors might be involved was never surprising to me.
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