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johanvts

656 karma · joined July 31, 2015

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johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
Thank you. It's a good point, but what I am trying to say is that lightning cannot provide the level of security BTC does, hence the need to constantly return to the safety of the block-chain. There is no free lunch: Security in the lightning network must break down/i.e. require more trust as the number of node-jumps in a transaction increases, and perhaps as the number of transactions in the channel increases as well. If not, then lightning solves the distributed double spend problem in its own (efficient) way, that we should just use instead of BTC.

Would you agree with me that lightning 'stretches' each BTC transaction by using clever tricks ala. aggregation, checksums, hashing, etc.? I buy that this scales the number of transactions dramatically, especially between a limited number of parties. It might be that this is stretches far enough be make BTC useful as a currency, but I remain very doubtful of that. If that is indeed the case, it seems that BTC has managed to fail as a currency for other reasons.

johanvts··on The first sodium-ion battery EV is a winter range monster
Thanks, I wanted to know about price. Isn't that the main benefit of sodium-ion. On par energy density with LFP, but a lot cheaper.
johanvts··on FDA intends to take action against non-FDA-approved GLP-1 drugs
Nicely put :)
johanvts··on FDA intends to take action against non-FDA-approved GLP-1 drugs
Nobody is suggesting paying Novo up front, they footed that bill, we are talking about paying a premium after product lunch, which people certainly did for the iPhone.
johanvts··on FDA intends to take action against non-FDA-approved GLP-1 drugs
The US has zero credibility w.r.t making international treaties these days. And generally is completely set up for a few peoples maximum “expected negative loss”. Sure things could theoretically be structured differently, but for the foreseeable future they aren’t.
johanvts··on FDA intends to take action against non-FDA-approved GLP-1 drugs
Somebody has to pay for the drugs development, the poor can't pay, if the rich (US) won't pay, there simply won't be any drug.
johanvts··on FDA intends to take action against non-FDA-approved GLP-1 drugs
What percentage of global rich, obese people live in the US? This is the main market and the product would not exist if it could not command a high profit here. Besides that, I think the US prices are so high due to the insane medical insurance structure, not because the drug companies really make much more than in other countries.
johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
Thanks, I accept that it requires less trust than using a central ledger, still it cannot provide the level of trustlessness bitcon can, if it could why use btc? I totally agree with your analogy, but in my view that just underlines that BTC is not useable as a currency, just as gold is not.
johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
I have, and as I have said to others the lightning network is not some magic that makes distributed PoW efficient, it just lets you conduct a bunch if transactions off chain and then record the end result. You could do that with fiat currency as well. BTC does one thing: lets users transact without possibility of double spending, without trusting any other users. Lightning network removes that last part, so you are just back to VISA/PayPal/Banks etc etc.
johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
The lightning network can handle transactions sure. Because it is not a distributed POW system. You can also just sell some BTC, transact via VISA or paypal etc., and buy BTC when you are done. Im not saying you can’t use BTC as a store of value. Just that transaction costs are way to high to use for payments/transactions i.e. as a currency.
johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
As i understand it, all the lightning transactions happen off chain and the results are then published afterwards. So you are back to trusting a payment processor to avoid double spend. And, if you can do that, you don’t need BTC to begin with. Its just integrating bitcoin with another system that is actually able to do transactions. BTC alone remains horrible at that.
johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
I like to point people to this page: https://digiconomist.net/bitcoin-energy-consumption/

The breakdown in cost pr. Transaction really drives home what a ludicrous system it is. Bitcoin is a fantastic example of a great invention put to horrible use.

johanvts··on Why This Computer Scientist Says All Cryptocurrency Should "Die in a Fire" (2022)
The reason it doesn’t work as a currency is that the transaction costs are way way to high for that. A single transaction it is literally the price of 1-2 million visa transactions. This is by design, bitcoin will never be a competitive system for payment processing, without adding centralized “2nd layer” systems, and at that point why not just use a centralized system to begin with. It makes sense, a distributed system that does the same work millions of times cannot compete with a centralized system that does it once.
johanvts··on I miss thinking hard
I dont think LLMs really took away much thinking, for me they replaced searching stackexchange to find incantations. Now I can get them instantly and customized to my situation. I miss thinking hard too, but I dont blame that on AI, its more that as a dev you are paid to think the absolute minimal amount needed to solve an issue or implement a feature. I dont regret leaving academia, but being paid to think I will always miss.
johanvts··on Court orders restart of all US offshore wind power construction
Populism is always a danger, but the current US administration is all about spite, no matter the cost. It is uniquely, outstandingly bad. Lots of places have working democracies that have managed to do long term planning.
johanvts··on Court orders restart of all US offshore wind power construction
You can have a functional democracy and still do long term planning, the problem is the current US government. Its not a fundamental flaw in democracy.
johanvts··on Court orders restart of all US offshore wind power construction
Which is exactly why Orsted will now focus on European wind projects instead. American projects will have to be that more profitable/expensive in the future to compensate for the political risk. But I guess this is exactly the desired outcome for big oil, no outside competition.
johanvts··on LED lighting undermines visual performance unless supplemented by wider spectra
- Less efficient - Shorter lifespan - Some of them contain harmful materials/gasses - Metal fatigue when turned on/off frequently

Probably there are more

johanvts··on Norway EV Push Nears 100 Percent: What's Next?
You are right for now, but co2 neutral is not impossible. Thats the promise of Rivan, see rivan.com

> Rivan’s RNG (renewable natural gas) generator combines 3 core technologies:

1. A calcium-looping DAC system (CO2)

2. An alkaline water electrolyser (H2)

3. A sabatier reactor (CH4)

To produce 99.9% pure synthetic natural gas, which acts as a carbon-neutral drop-in replacement for fossil alternatives.

johanvts··on Norway EV Push Nears 100 Percent: What's Next?
Subsidies where needed 10 years ago, today the US and EU have to put massive tariffs on mass produced, cheap, superior EVs to keep their own ICE auto industry alive.
johanvts··on Norway EV Push Nears 100 Percent: What's Next?
Power-to-X, ie electrolysis seems a much better path for CO2 neutral flight, and norway is ideal for that as well.
johanvts··on Norway EV Push Nears 100 Percent: What's Next?
With V2G a large EV fleet would actually stabilize the grid.
johanvts··on Norway EV Push Nears 100 Percent: What's Next?
Except it is remote and flat land is scarce and very expensive.
johanvts··on LED lighting undermines visual performance unless supplemented by wider spectra
Look for high Ra or CRI value. Dont buy cheap LED lights, they last for far too long.
johanvts··on LED lighting undermines visual performance unless supplemented by wider spectra
If the LED has good DC conversion it should not flicker at all, the flow across the diode would be constant. Just buy good LEDs, incandescent light has many drawbacks.
johanvts··on LED lighting undermines visual performance unless supplemented by wider spectra
Phillips, try searching for EyeComfort. I think all of their premium bulbs have 80+ Ra.
johanvts··on LED lighting undermines visual performance unless supplemented by wider spectra
Ra value is (often) written on the package, go for 95+, it’s a bit hard to find but the difference is real. I Do not buy under 90.
johanvts··on I built a light that reacts to radio waves [video]
If you buy three (or more) Phillips Hue bulps you can have them respond to motion detected by things moving around and disturbing the radio waves they use to communicate. So they must have pretty much the kind of map you want, but I dont know how easy it is to export it.
johanvts··on Tree-sitter vs. Language Servers
Go is here: https://github.com/tree-sitter/tree-sitter-go Try google, the others are probably out there as well.
johanvts··on San Francisco to offer free childcare to people making up to $230k
They where largely unproductive compared to the last few decades. Source: https://ourworldindata.org/grapher/global-gdp-over-the-long-...
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