gandalf_der_12te

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Linux is second nature to us geeks, so it's easy to forget that the average person probably knows just Ubuntu or Fedora.

And Debian GNU/Linux, of course.

The community !mars@discuss.tchncs.de is hosting every kind of news, art and discussions about the planet mars. Everybody is welcome to participate, even if you don't know much about Mars. Feel free to ask questions, learn and have fun. Artworks are accepted if they're at least somewhat related to Mars. I post there regularly, to provide information and infographics, such as this one and this one, but i haven't had time yet to put these infographics into actual posts to explain what is shown on them. Forgive me for not having done so already.

Consider the following tech tree.

• The rocket can double as a living habitat, if it manages to land in one piece. Martian dirt could be used to re-inforce the walls to protect against radiation.

• Solar energy with a battery or nuclear could serve as a power source.

• Water can be extracted from regolith (martian rock) by baking the regolith in a furnace, the water evaporates and can the be re-condensed.

• Oxygen can be produced through the electrolysis of water. One kilogram of water produces approximately 880 g of O~2~, which is roughly enough for a day per person.

• Methane can be produced through the Sabatier process, which takes as input H~2~ and CO~2~, and can be used as a rocket fuel and to make bioplastics out of it.

• Plants are the tricky part. I will create a further post later in the future to give more detailed information about this. The basic gist is that you can create greenhouses if you have the basic ingredients (mostly water).

parallel inventions in the 15th and 20th century:

• books (printed through the printing press) spread knowledge just like the internet does, allowing a facilitated and drastically accelerated exchange of ideas
• new transport methods allow new lands to be reached and new worlds to be explored. i wonder whether it is an accident that "spaceships" are called after ships

As a follow up to this post in this community: The Future is NOT Self-Hosted

I have thought about how to set up local, community-hosted fediverse servers that respect privacy and anonymity while still guaranteeing that users joining the server are human-beings.

The reasoning behind these requests is that:

• You want anonymity to guarantee that people won't face repercussions in real life for the opinions they voice in the internet. (liberty of free speech)
• You want to keep the fediverse human, i.e. make sure that bot accounts are in the minority.

This might sound like an impossible and self-contradictory set of constraints, but it is indeed possible. Here's how:

Make the local library set up a fediverse server. Once a month, there's a "crypto party" where participants throw a piece of paper with their fediverse account name into a box. The box is then closed and shaked to mix all the tokens in it. Then, each one is picked out and the library confirms that this account name is indeed connected to a human. Since humans have to be physically present to throw in a paper, it is guaranteed that no bot army just opens a hundred anonymous accounts. Also, the papers are not associated to a particular person that way.

This is essentially all the calories that a person burns through their daily activity excluding purposeful physical exercise. Think of the low-effort movements that you string together over the course of your day – things like household chores, strolling through the grocery aisle, climbing the stairs, bobbing your leg up and down at your desk, or cooking dinner.

It's a concept that goes by the name non-exercise activity thermogenesis, or NEAT, for short.

And even among those who do exercise regularly, NEAT usually plays a bigger role in calorie burning than working out.

It's not that NEAT should be considered a substitute for more structured bouts of intense physical exercise, which has its own well-established health benefits. But revving up NEAT can be more accessible for some people, especially those who don't exercise as much, if at all.

from left to right:

• living inside the spaceship to reduce the need for construction/habitats
• solar panels (800 m² per person gives 80 kWpeak)
• bagger + furnace (not sketched) for excavating hydrated minerals and heating them in an oven to release water
• some greenhouses (recycled water for watering is displayed)

made with my newly acquired Gaomon drawing tablet + krita on linux :)

it's my first drawing, please be kind <3

Consider i have a phone, and it's bootloader is unlocked. What is the worst that could happen?

I'm interested in the security aspect of it. Consider you're detained by the police, and they want access to your phone. Can they get access if the bootloader is unlocked?

What is the role of the password? I.e., i'm using a 4-digit PIN for my phone today. Can the phone's data be secured against police force if they get physical access to the phone?

To further elaborate:

I'm well aware of the XKCD:

I'm wondering, apart from applying physical force, what are the surveillance aspects? Could somebody sneakily install spyware on my phone that can read all files on the phone's internal storage if they get a physical hold of it for (let's say) 15 minutes?

Transcript:

To my fellow olds - If you suffered in life and want others to suffer because you turned out fine - you in fact, did not turn out fine. Enough with the "kids these days".

it's from mastodon

Insinuating that the liberals are the bad guys. I went through the !usa@lemmy.ml post history and a lot of posts by @geneva_convenience@lemmy.ml are factually skewed and very suggestive, such as this post suggesting that AOC is actually pro-genocide.

Can effective action be taken to clean up the Fediverse? Can @geneva_convenience@lemmy.ml be banned from federation?