Lichtblitz

joined 1 year ago
[–] Lichtblitz@discuss.tchncs.de 1 points 1 month ago

No, I said they hadn't demonstrated it. But 95% is close enough, I stand corrected.

[–] Lichtblitz@discuss.tchncs.de 5 points 1 month ago* (last edited 1 month ago) (1 children)

In that case I stand corrected on the whole orbit bit. Thanks for taking the time.

[–] Lichtblitz@discuss.tchncs.de 2 points 1 month ago* (last edited 1 month ago)

I didn't say "a little" money. It may be important or critical for the business but from a technical perspective, demonstrating how it can safely bring loads up and down decides whether the whole concept is actually feasible. That's when people will start to get excited.

[–] Lichtblitz@discuss.tchncs.de -2 points 1 month ago (13 children)

As far as I understood it, SpaceX uses the word "orbit" liberally. If it reaches the hight where an orbit would be possible, that's "being in orbit" for them. In an actual orbit, the rocket would not fall back down again in an hour or so without active breaking. If my understanding is incorrect, I'm happy to be corrected. And even of that was achieved soon, it's still all without demonstrating that the starship could actually carry a load and return it safely. Not even an inexpensive dummy load. All SpaceX is showing in their live feeds are empty cargo holds that fill up with hot gases and fumes during reentry.

[–] Lichtblitz@discuss.tchncs.de 6 points 1 month ago (19 children)

I think the average person gets it right. It's a nice feat to catch the booster and it will save money. But that's a side quest. The main quest of getting an actual load to orbit and beyond is still pretty far away. At least compared with the official time line where they wanted to achieve much more than that three years ago.

[–] Lichtblitz@discuss.tchncs.de 3 points 2 months ago

Ansible playbook is perfect for this. All your configuration is repeatable, whether on a running system or a new one. Plus you can start with a completely fresh newest version image and apply from there, instead of starting from a soon-to-be outdated custom image.

[–] Lichtblitz@discuss.tchncs.de 2 points 5 months ago (1 children)

I specifically picked the statistic that claimed to have included the full cost of installing something new. Most other statistics only include prolonging the life of existing plants, thus ignoring the installation costs completely. You can just quote the paragraphs that prove your point the same way I have and then we can discuss further. Maybe I made a mistake, who knows.

[–] Lichtblitz@discuss.tchncs.de 26 points 5 months ago* (last edited 5 months ago) (3 children)

Extremely cheap per kilowatt? Every statistic out there that I've seen and that includes government funding, as well as construction and deconstruction costs, paints a different picture. Nuclear is only competitive with coal or the relatively underdeveloped solar thermal.

In 2017 the US EIA published figures for the average levelized costs per unit of output (LCOE) for generating technologies to be brought online in 2022, as modelled for its Annual Energy Outlook. These show: advanced nuclear, 9.9 ¢/kWh; natural gas, 5.7-10.9 ¢/kWh (depending on technology); and coal with 90% carbon sequestration, 12.3 ¢/kWh (rising to 14 ¢/kWh at 30%). Among the non-dispatchable technologies, LCOE estimates vary widely: wind onshore, 5.2 ¢/kWh; solar PV, 6.7 ¢/kWh; offshore wind, 14.6 ¢/kWh; and solar thermal, 18.4 ¢/kWh.

Emphasis mine, source: https://world-nuclear.org/information-library/economic-aspects/economics-of-nuclear-power

[–] Lichtblitz@discuss.tchncs.de 3 points 6 months ago

When I installed Kinoite to start using Linux as my primary daily driver, the first thing I did was setting up Ansible, creating a new playbook and all Linux configurations I made from that point on, are only ever done through that playbook, which is backed up in my Forgejo instance. One command and everything is being set up exactly the way I want. It feels extremely liberating.

[–] Lichtblitz@discuss.tchncs.de 4 points 8 months ago* (last edited 8 months ago)

It depends. Some hardware degrades gracefully while my current desktop system won't even boot and throws error codes on an empty battery. It took me hours to figure out what was wrong the first time it happened.

[–] Lichtblitz@discuss.tchncs.de 3 points 9 months ago

Yeah, it's the same for me. The content is awesome but requires a lot of concentration.

 

With Wayland becoming more and more popular, it's interesting to look at the around 40 year history of X.

[–] Lichtblitz@discuss.tchncs.de 2 points 9 months ago* (last edited 9 months ago)

As you mentioned, with Fedora the best alternatives are immutable spins. Updating means downloading a new base image, applying overlays and additional installations to it and on the next reboot you start from that image. You can configure it to keep as many previous versions as you need and boot into those directly on startup. Since you never change your current image once it's built, you can't break a known good system. You can only ever break your next version and in that case, just boot the previous.

I've created an Ansible playbook that configures a vanilla Kinoite the way I want it. No need to back up the system if I can recreate it with less than a megabyte of text files. Secrets are in my password vault, personal files are in my personal cloud and get synced to and from the laptop continuously. I would never go back to backing up system files as opposed to recreating it with a playbook. That seems so wasteful in hindsight.

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