renhanxue
Joined 2 years ago
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805
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102
Member since
Jan 15
Recent submissions
Comment · 8 days ago
In Sweden there are many cities where the infrastructure (dark fiber to the premises) is publicly owned, but the public infrastructure owner offers no end-user service. Instead, internet service for end users is an open market where everyone uses the public infrastructure. It works really well and is really cheap for the consumers.
Comment · 8 days ago
I think you replied to the wrong post, then.
Comment · 8 days ago
It should not really be controversial. Classic liberal economics (from e.g. John Stuart Mill and on) generally acknowledges that natural monopolies exist and that it's generally beneficial for everyone if they are publicly owned.
Comment · 9 days ago
The researcher in question has publicly stated[0] that he wanted to try Google's paranoid_crypto tool[1], so he ran it on some roots as a quick proof-of-concept, and the first thing that happened was that it detected these intermediates. He also states he's been running a lot of certificate linters so this was just the next logical step I guess.
[0]: https://groups.google.com/a/mozilla.org/g/dev-security-polic...
Comment · 9 days ago
This was found by checking for weak keys using readily available software. There were no other weak keys found. See https://news.ycombinator.com/item?id=50180284
Comment · 10 days ago
> https://github.com/google/paranoid_crypto
This repository was archived by the owner on Aug 19, 2026. It is now read-only.
I guess now that we've checked, nobody will ever make a mistake like this again so we don't need this anymore? :)
Comment · 27 days ago
Very obviously yes.
Comment · 7 months ago
That's not really accurate. An overwhelming majority of the simplified characters have had their own code points in Unicode ever since 1.0. Some more details here: https://r12a.github.io/scripts/chinese/
Comment · 7 months ago
I mean, you can call it a "mountain" of greenwashing but to me it looks more like a mole hill. Total Swedish electricity production is typically 160 to 165 TWh per year and total consumption is usually between 135 and 145 TWh.
In 2025, the net export was about 33 TWh. Gross import from Germany, Poland and Lithuania, including transit to other countries, was 1 TWh. So, imported power from countries with coal power plants was less than 1% of total consumption, and the amount of fossil free power exported was more than 30 times greater than the amount of (potentially) fossil power imported. 1-2% fossil energy in the mix is to me not really significant, and especially not considering how much fossil free power is exported.
Sources:
Statistics Sweden table of power import and export: https://www.scb.se/hitta-statistik/statistik-efter-amne/ener...
Basic information about Swedish power generation: https://www.energiforetagen.se/energifakta/elsystemet/produk...
Comment · 7 months ago
That may be true in many places, but the Swedish forestry industry is very big, and the district heating plants really do burn mostly forestry byproducts. Of all the biofuel used in Sweden (not just for energy generation), 75% comes from forestry products, and the vast majority of it is either unrefined wood products or byproducts from Kraft process paper manufacturing (like tall oil and turpentine etc).
Specifically in district heating, 87% of the forestry-sourced fuel is unrefined wood products. Almost half of it is just bark, branches and treetops. Of all the biomass in an average mature tree logged in Sweden, 43% ends up as pulpwood, 43% as saw timber, 8% gets burned for fuel and the remaining 6% is treetops and branches which also tend to end up burned for fuel.
There is definitely a lot of debate in Sweden about sustainable forestry practices, though. The industry really wants to clearcut everything for convenience, but it's really bad for biodiversity and the general public hates it.
Source: the report Hållbarare biobränsle i fjärrvärmesektorn, Energiforsk 2023; specifically the charts on pages 14 and 15. Link: https://energiforsk.se/media/33316/2023-979-ha-llbarare-biob...
Addendum: I believe there's also been some studies and experiments involving importing olive pits from the Mediterranean olive oil industry for burning in district heating plants, but I don't think it's been done at scale.
Comment · 7 months ago
For Sweden, the coal plants were exclusively for cogeneration (district heating with electricity as a byproduct) and only used as peaker plants in winter. Some of them still exist but have been converted to burn biofuels instead, mostly woodchips and other byproducts from the forestry industry.
For most practical purposes, Swedish electricity generation has been basically fossile free since the 1980's.
Comment · 8 months ago
The Norwegian Consumer Council's entire yearly budget is about 100M NOK, or about $9.5M USD at the current exchange rate. They most assuredly did not spend >$1M USD on a short video clip.
Comment · 8 months ago
I mean, for the most part the book is an edited transcription of what he said at the lectures (or, in some cases, what a guest lecturer said). But the lectures weren't scripted, and we know this because his lecture notes are preserved[0] and they do not contain anything like he full text of even a single lecture. They're just lecture notes, not a script. And of course, the book also contain a lot of example problems and graphics - those are mostly the work of Bob Leighton, I believe. There's a reason the book has had so many errata corrected over the years: it was never written and edited in the way a book manuscript would've been written and edited.
Comment · 8 months ago
> The speaker says that Feynman didn't write the Feynman lectures. Wrong.
No, she's right, just talking about a different thing.
"The Feynman Lectures on Physics" is a physics textbook. [0] He did prepare his own lecture material, but he did not write the book.
[0]: https://en.wikipedia.org/wiki/The_Feynman_Lectures_on_Physic...
Comment · 10 months ago
Most district heating systems in the Nordics are publicly owned, in part or in full. There are also price controls for the privately owned ones.