The animal on the picture is definitely not sus. ;)

https://en.wikipedia.org/wiki/Sus_(genus)

I ride a 300 € bike as a hobby in summer. It’s from 2014. Given the highly advanced bike stealing culture present locally, any more expensive bike would need to be smeared with gull excretions for protection against theft. :P

Your post makes it look like a binary choice between cop-filled reality and cop-free fantasy. But there are marked differences between how many cops (many = often more stupid, untrained, poorly selected, corrupt) a society needs and what activity is expected of them.

Existing societies also demonstrate a vastly different need for imprisoning people.

Myself, I think that prisoners per capita is a better indicator than cops per capita. The latter gives weird results heavily tilted towards microstates (lead by Vatican, Pitcairn Islands and Motserrat).

• Maximum of prisoners per capita: North Korea (undisclosed but estimated), El Salvador (1600 per 100K), Cuba (794), Rwanda (637), Turkmenistan (576), United States (541).
• Minimum of prisoners per capita: go and have a look, it’s interesting. The leading 5 have a trend towards microstates and very poor developing countries, but if one filters them out and chooses sizable countries with functioning economies, the first that comes across is Japan - with an incarceration rate of 33 per 100K. That’s 48 times less than El Salvador and 16 times less than the United States. The first European country on the list is Finland with 52 per 100K, indicating approximately what a “western style” society can achieve. The EU average seems to be around 100 per 100K. The highest rated EU country seems to be Poland with 194 per 100K.

Notably, the first somewhat sizable European country and western-type society on both lists is Finland. It has the lowest prisoners per capita in Europe (at 52 per 100K) and the lowest cops per capita in Europe at 132 per 100K. It is not a known haven of rampant crime - it has really low crime rates too. Apparently in some conditions, you can have few cops, few prisoners and limited crime.

My guess - I could be wrong - is that the quality and coverage of social security, education and health care are what actually make the difference. Most people don’t start criminal activity for fun. Contributing factors include desperate poverty, poor parenting, lacking education, mental illness and exposure to trauma, damage from disease and substance abuse, etc, etc. Lots of full prisons are probably a factor that contributes to criminality, by making a “higher education in crime” accessible to more people.

As a minimum, how about frequent rotation and a sortition + selection system to staff the squads?

Imaginary example:

Two “cops” are needed for a term of 90 days (side note: in this hypothetical society, it could be that a cop is not a first responder but an investigator - first responders may be selected by proximity to the event and called up using some automated emergency messaging system). An investigator is allowed to request expert assistance from outside their department and often does.

At first, 10 candidates are sortitioned at random. Out of them, 3 refuse the job for various reasons, 7 go through instruction and pass evaluation. Out of them, 3 either step out during training or fail exams, 4 complete exams. Among them, another round of sortition occurs: 2 are selected at random, while 2 are paid compensation for study and assigned to reserve. If lottery chooses them again, they won’t need to pass exams.

This might be possible to enhance with other tricks. If feedback shows that cops cannot be impartial near their home, then they don’t work near their home. If however, feedback shows that they perform best near their home, then the opposite way.

The main goals this would aim to achieve:

• ensure that corruption will not start
• ensure that investigation is not biased (or that chances exist of bias being quickly exposed)
• ensure that offices cannot be given by people in power to whom they prefer
• ensure that competence is valued and unqualified bozos won’t be appointed

Why the water isn’t killing the fire?

Could be anything from sodium to calcium carbide to fluorine. :) Sodium makes hydrogen with water, carbide makes acetylene with water, and flouride just oxidizes water by grabbing hydrogen away from oxygen.

If the character’s plan is to try fascism next, I think they’re into fairly agressive substances. :P

I mean sure, if you’re at such extreme latitudes that you have months of total darkness, then solar will have a problem there. Maybe small modular reactors make sense for those niche applications.

Currently, solar still makes economic sense, but from April to October. Lots of it was built rather fast, now the adoption is slowing since the grid can’t accept it everywhere.

Consequently, summer is when oil shale miners rest and prepare for the next season.

Since the goal is to get rid of mining oil shale, big plans exist to install a lot of wind power. Sadly, this has gone embarrassingly slow, and it cannot cover winter consumption, and there is not enough storage.

As a result, some companies and building out storage, but only enough to last a few hours.

…and in the next country southwards, there is a huge gas reservoir that could accept methane, enough to last the whole winter, but nobody has a good enough handle on methanation to renewably produce a considerable quantity and store it there. :o

With regard to reactors, it seems likely that getting one would take 10 years and the local country here doesn’t even have legislation built out for nuclear power. They’re drafting it. Starting from zero is quite slow.

That’s a pretty big gap to cover with spamming more panels. I would venture to guess: this approach would work up to latitude 45 or so.

https://www.engineeringtoolbox.com/surface-solar-radiation-d_1213.html

Where I live, in midwinter, the day is 6 hours long. Over here, wind turns more heads than solar. But yes, solar is riduculously quick to install.

Since 2021, nearly 4 full years, the world has closed less than 1% of active coal power plants.

Closing will come later, when alternatives are widely available. What renewable energy does currently - at least here - is forcing those plants temporarily out of the market, especially during summer months and windy weather. The plants will exist and stay ready in case of need for well over a decade, maybe even two - but they will start up ever more rarely.

Technically, the deal is: we don’t have seasonal energy storage. Short term storage is being built - enough to stabilize the grid for a cold windless hour, then a day, then a week… that’s about as far as one can go with batteries and pumped hydro.

To really get the goods one has to add seasonal storage or on-demand nuclear generation. The bad news is that technologies for seasonal storage aren’t fully mature yet, while nuclear is expensive and slow to build. There’s electrolysis and methanation, there’s iron reduction, there are flow batteries of various sorts, there’s seasonal thermal storage already (a quarter step in the right direction)…

…but getting the mixture right takes time. Instead of looking at the number of closed plants, one should look at the sum of emissions. To remain hopeful, the sum should stop growing very soon.

I would add:

• if you wanted direct and low-latency access to cameras (for machine vision)

Thanks, that looks like something I might have to try. :) Myself, over the network, I still don’t do filesystem level incremental backups, sticking to either directories or virtual machine snapshots (both of which have their shortcomings).

I’ve been hearing about ZFS and its beneficial features for years now, but mainstream Linux installers don’t seem to support it, and I can’t be bothered to switch filesystems after installing.

Out of curiosity - can anyone tell, what might be blocking them?

Edit: answering my own question: legal issues. Licenses “potentially aren’t compatible”.

Due to potential legal incompatibilities between the CDDL and GPL, despite both being OSI-approved free software licenses which comply with DFSG, ZFS development is not supported by the Linux kernel. ZoL is a project funded by the Lawrence Livermore National Laboratory to develop a native Linux kernel module for its massive storage requirements and super computers.

Source: https://wiki.debian.org/ZFS

From a person who builds robots, three notes:

1. Camera

Raspberry Pi has two CSI (camera serial interface) connectors on board, which is a considerable advantage over having to deal with USB webcams. This matters if your industrial robot must see the work area faster, your competition robot must run circles around opposing robots, or more sadly - if your drone must fly to war. :( On Raspberry Pi, in laboratory conditions (extreme lighting intensity), you can use the camera (with big ifs and buts) at 500+ frames per second, not fast enough to photograph a bullet, but fast enough to see a mouse trap gradually closing. That’s impossible over USB and unheard of to most USB camera makers.

2. Optimized libraries

I know that Raspberry Pi has “WiringPi” (a fast C library for low level comms, helping abstract away difficult problems like hardware timing, DMA and interrupts) and Orange Pi recently got “WiringOP” (I haven’t tried it, don’t know if it works well). I don’t know of anything similar on a PC platform, so I believe that on NUC, you’d have to roll your own (a massive pain) or be limited to kilohertz GPIO frequencies instead of megahertz (because you’d be wading through some fairly deep Linux API calls).

3. Antenna socket

Sadly, neither of them has a WiFi antenna socket. But the built-in WiFi cards are generally crappy too, so if you needed a considerable working area, you’d connect an external card with an external antenna anyway. Notably, some models of Orange Pi have an external antenna, and the Raspberry Pi Compute Module has one too.

Snow can definitely be useful in summer - but I would store it differently. I have observed that the local airport simply piles its snow up into a massive heap. This heap sometimes lasts until early June.

If I would need to store snow, I would likewise pile it, but would use two tricks: the ground under the heap would be thermally insulated, and once weather turns warm, the heap would be covered with a blanket of some kind. A hatch is just as good as a blanket, of course, but uses more material.

Actually, since storms have a tendency to blow away blankets, a depression / pond where to deposit the snow would probably be handy. Nothing too well engineered - just an insulated bottom and a location that keeps ground water elsewhere.

The wood-powered car is a nice idea.

As for whether electric cars need fancy electronics - that is a debatable topic. :) A brushed DC motor wears out fast, but definitely doesn’t need fancy stuff. An inverter to produce 3-phase alternating current for a brushless motor can be rigged up with relays and reed switches, but those have a shorter lifetime than power transistors. A fixed-speed motor controller can likely be radically simpler than a variable speed controller. As for how simple a transistor-based motor controller can get… well, at least one microchip is advisable. But it doesn’t do much - the calculation it performs is simple. I think that in a solarpunk society, someone would manufacture such a chip in their excessively well equipped barn. The chip would not be efficient, but would work.

Now, power transistors would better be efficient… so they cannot be too homebrew. I think a dedicated factory might be needed to make those. The other parts - resistors, capacitors, are a piece of cake.

Looks nice.

I do mow, but it’s more like making hay - when the plants have grown tall, and most varieties have managed to bloom. I also try to de-synchronize it from neigbours’s activities, so the landscape would never be the same in every direction.

Also, mowing peppermint and dandelions is taboo in my yard. Peppermint blooms very long and repels mosquitos, while attracting lots of other bugs to drink nectar. Dandelions are just nice to look at, so I don’t do anything until they are “ready to fly”.

If I didn’t cut hay at all, I would get Artemisia growing here and unfortunately their pollen can ruin a week for me.