wcoenen

8 ms·

91.
by wcoenen 2y ago
That depends on how long you want to sustain the extraction of power. Perhaps you meant to ask how many joules of thermal energy there are in the Earth? Apparently about 2*10^31 joules[1]. So at an extraction rate of 1 terawatt (=10^12 joul
92.
by wcoenen 2y ago
If you replace "eat you" by "financially ruin you", that's pretty much what pig butchering scams are: https://en.wikipedia.org/wiki/Pig_butchering_scam
93.
by wcoenen 2y ago
Selling of all risky assets tends to be correlated. It's called "risk off" sentiment. This happens because when one asset drop in price, leveraged investors (i.e. those who borrowed to buy) may get "margin calls" fr
94.
by wcoenen 2y ago
One of the things considered in the paper is that the reaction may be temporary and is triggered by the research itself: Assuming the ‘geo-battery’ is partly responsible for the DOP observed, the initial high DOP rate may have been related
95.
by wcoenen 2y ago
This list is a mix of chemical substances (e.g. water), categories of substances (e.g. salt) and elements (e.g. carbon), so it doesn't really make sense. It would make more sense to stick to elements, e.g. list hydrogen and oxygen inst
96.
by wcoenen 2y ago
Humans aren't the only primates with this trait. It's all the Haplorhini.
97.
by wcoenen 2y ago
Picking the S&P500 over a world index because you think it will outperform, has the same problem as picking individual stocks over an index. You can't actually know which will outperform in the future.
98.
by wcoenen 2y ago
Gemini is "reading" your documents in the same sense that google servers are "reading" your documents in order to show them in your browser. Gemini is not a person and won't remember what it has "read". I
99.
by wcoenen 2y ago
This just weird Twitter rage. The user seems to think the private information in their tax return will leak, just because Gemini tried to summarize it. To back this up, they reference the story about Gemini chats "leaking" on the
100.
by wcoenen 2y ago
The Blue Bird "Vision Electric" school bus specifications are here: https://www.blue-bird.com/?sdm_process_download=1&download_i...
101.
by wcoenen 2y ago
This is about RLHF training. But I've wondered if something similar could be used to automatically judge the quality of the data that is used in pre-training, and then spend more compute on the good stuff. Or throw out really bad stuff
102.
by wcoenen 2y ago
There is a lot of drama currently in the Netherlands about the end of net metering.
103.
by wcoenen 2y ago
Electricity demand has been flat or growing very slowly for the last 20 years, in spite of population growth, because efficiency increased over the same period. It's only recently that things like electric vehicles and AI have restarte
104.
by wcoenen 2y ago
Note that this was about _public_ posts. What is stopping everyone else (other than Meta) from using your public posts as training material? How will you even know? All that data is already being scraped and processed into datasets by many
105.
by wcoenen 2y ago
Over the last 30 years, South Africa's generation capacity has crumbled from 37GW to 28GW. So yes, sure, electrifying anything there is not going to work. But I'd say that's a completely different category of problems.
106.
by wcoenen 2y ago
> A counterpoint i rarely see is if everyone would switch to EVs or PHEVs in 5 years, the electrical infra would collapse. Electricity grids are massively overbuilt and underutilized because they need to deal with a big spike of power
107.
by wcoenen 2y ago
Previously discussed 3 days ago at https://news.ycombinator.com/item?id=40626764 and 6 days ago at https://news.ycombinator.com/item?id=40610133
108.
by wcoenen 2y ago
Once a colleague was able to unlock my pixel phone with face unlock - with his face. I'll never trust biometrics again.
109.
by wcoenen 2y ago
That seems plausible. There is a trend happening where businesses are increasingly offering different prices to different customers. The Odd Lots podcast just did an episode about it. One of the more memorable examples discussed was to offe
110.
by wcoenen 2y ago
Summary: utilities will use dynamic rating and other tricks to squeeze a bit more performance out of existing lines. (Transmission lines have losses, these heat up the wires. If they get too hot, they droop too much. So they have a maximum
111.
by wcoenen 2y ago
I didn't realize central banks could change rates so frequently. Apparently sometimes they do make changes every month, so it's a plausible explanation. But then I looked up 1 month bond rates, and apparently those are still below
112.
by wcoenen 2y ago
I wonder why government bills can have a lower yield than the central bank deposit rate. For example, the German 3 month bill is below 3.6% now.[1] Shouldn't banks be selling these bills, and putting the money with the ECB instead wher
113.
by wcoenen 2y ago
> I assumed 5 mins would be enough. Data shows that I need about 25 mins to get CO2 levels down to around 500ppm I also noticed that just cracking a window doesn't seem to do much according to the CO2 monitor, except letting the h
114.
by wcoenen 2y ago
The tariffs for Chinese EVs happened in the US (increased from 25% to 100%), not in the EU.[1] The CO2 thing is something that is done in France to put conditions on local subsidies for EV purchases, it's not about import tariffs.[2] T
115.
by wcoenen 2y ago
If they win the bet against you, you'll both be dead by definition of the bet. Therefore the bet doesn't make sense and shouldn't be taken seriously.
116.
by wcoenen 2y ago
Thanks! I had no trouble setting up the app with my car. This looks like it covers what most EV owners in Europe would need to optimize their electricity bill. What I'm still missing here is a way to reserve some battery capacity to ta
117.
by wcoenen 2y ago
I live in Flanders, Belgium. Half of households here have a digital meter by now, which makes such contracts technically possible. And the government has made it mandatory for the large energy companies to offer such a "dynamisch elekt
118.
by wcoenen 2y ago
I have a time of use contract with hourly pricing, based on the day-ahead electricity market. So I also wanted to schedule charging, but I was somewhat disappointed that - my charging station has no scheduling feature built-in - my EV does
119.
by wcoenen 2y ago
Perhaps it would make sense if electricity contracts came with a "roaming" option for a certain region. As in, get the same electricity price as at home when using a charging station on the go. After all, I think it shouldn't
120.
by wcoenen 2y ago
The dow Jones index is price weighted instead of market cap weighted. Constructing an index like that doesn't make any sense, e.g. a stock split reduces the weight of the stock in the index even if the market cap of the company stays t

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