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Dec 13, 2020 16 tweets 7 min read Read on X
A story of inappropriate technology: in the 1970s it was decided to modernize the rice farming of Sri Lanka, whose system that had not changed much for 3000 years. The goal was to replace the water buffalo with the modern tractor, but the attempt had disastrous consequences... Image
Buffalos create "wallows", pools of muddy water without which they cannot control their temperatures. Always filled with water, these wallows create many eco-services: in the dry season the become a haven for fish that then migrate back to the paddies when these fill with water. ImageImage
The fish is a valuable source of proteins for landless laborers and greatly help control the population of malaria causing mosquitoes who breed in the rice paddies. The vegetation around the wallows are breeding and hunting grounds for snakes and water monitor lizards who prey... ImageImage
...on rats that eat the rice and the crabs that burrow into the sides of the rice paddies eventually causing them to lose integrity, leading to collapses of entire paddy systems. Image
Without the water buffalo wallows, villagers no longer had a place to soak the palm fronds they needed to thatch their roofs, leading them to rely on locally made clay roof tiles, which caused massive deforestation as trees were cut down to fuel the tile kilns. Image
And with no pest control since the birds were gone (no forests) the snakes and lizards and fish were gone (no wallows) malaria spread like wildfire. Even farms that used chemicals found that mosquitoes quickly became resistant no matter how much they upped the dosage every year. ImageImageImageImage
All over the world, when a system that has evolved for long periods of time is radically changed or altered, we find the same examples of disaster and collapse. Here's Charles Marohn discussing the subject in the book Strong Towns: Image
The flip side on "inappropriate technology" is the famous parable of "Chesterton's Fence": if you come across a gate in a field and see no reason why its should be there, do not remove it until you have figured out why it was put there in the first place.
Millennia of hard earned handed down tradition and agricultural and ecological knowledge is being lost year after year, every time an old farmer dies without heirs. In many cases we have passed the point of no return: we will have to argue in the dark.
Most of this thread have so far been inspired by the great work of Dr. Ranil Senanayake and G.K. Chesterton. What follows will be more observations on tradition and culture and how it intersects with ecology and sustainability, but from other thinkers/authors. ImageImage
A more recent example from Akita prefecture in Japan, where dwarf apple trees were introduced to orchards. The owls could not perch or nest in these trees so before anyone understood it rodent populations exploded. english.agrinews.co.jp/?p=4636
How Sri Lankan religious festivals and customs are timed to function as pest control: 1. The torches carried by villagers as they go to and from temples after dark destroy huge numbers of insects just when these are at their peak breeding time and most destructive to agriculture. Image
2. Conch shells and drums inscribed with religious symbols and rhythmic chanting serves well to create booming noises carrying over large areas. There is a theory that these booms disrupt insect mating calls, leading to fewer insects as the festivals are timed to peak breeding. Image
3. Related, the water power automatic bamboo pipe drums developed by all rice growing cultures which serves to deter rats and also to disrupt insect mating calls. Sri Lanka has these too, in Japan they are called "shishi odoshi", deer scarers.
4. Summer offerings. In all Sri Lankan religions there are ceremonies where flowers, lights and fruits are offered. These attract insects, which are destroyed by the flames of the lights or eaten by the birds attracted by the fruits. The flowers perpetuate the tradition: beauty. Image
5. Oil lamps. Because some people think I am making this up: first we have the farmer's own words, describing the ritual, then a modern scientific explanation of how the ritual works as a mechanical pesticide. The oil is a home grown, home pressed, seed oil, of course. Image

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More from @wrathofgnon

Apr 1
It is well known warehouses built in earth plaster using inoculated fermented straw and soil keeps fruits, vegetables fresh longer and inhibits mold and microbial growth on paper, books, clothes, antiques etc. Hence Japanese "Dozō". But you can build miniature storage boxes too.
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A Japanese master plasterer designed boxes built exactly like regular earthen warehouse walls, except he reused wooden wine crates. He sells kits, or you can use your own materials to make your own if you feel up to it.


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These boxes are intended for grain, vegetables and fruit that you would normally keep in a "dark and cool" place. And they work. Here is a comparison with a polystyrene box and three mandarin oranges after 45 days. The blue box is more like what most modern homes are built like.
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Read 8 tweets
Mar 25
The practical skills in thatching can be difficult to acquire by videos or books alone, especially how to find materials and the binding. In Finland there is a traditional thatching technique that uses only easy to find reed and no binding: just spread it out and weigh it down. Image
A bound reed roof is far steeper and thus lasts longer, but it requires more skill to do correctly. Reed is often available for free and in vast quantities anywhere it grows, harvesting it is doing nature a favor. All materials used in a reed roof are compostable, all hand tools.


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For a standard roof of say 100m² you need to harvest about three hectares. You can harvest that by hand in about a month, or in a day if you have a reed harvesting machine. In Finland you harvest in March, April.
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Read 5 tweets
Feb 29
Maybe one of the oddest professions in Japan is that of the bokka (歩荷). Porters who carry supplies to remote mountain guesthouses inaccessible to vehicles. A bokka uses customized wooden ladder frames to carry 100-165kg of supplies on day long marches (walk up, run down).


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The job is popular: not surprisingly veteran bokka routinely tests as fitter and healthier than elite athletes. Both men and women take on the job, the average weight of a bokka is 60-70kg.


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Still not much of a chore compared to what some farmers used to handle.
Read 5 tweets
Sep 28, 2023
Iriairinya (入会林野) is the Japanese term for "commons". In the West the term "commons" are usually meant as fields for grazing but Japanese commons were traditionally the mixed grass and forest lands between mountains and flatlands usable in agriculture. Image
Iriairinya are typically from a couple of hectares up to 50-60 hectares. Still a valid legal concept, village's who manage commons also have the option to incorporate them (as modern organizations), to make them more compatible with modern legal practices. Image
Commons were meant to be vital lifelines for rural villages, providing its members with food (forage), feed (for livestock), fertilizer (leaves), fuel (wood, charcoal), building material (roof thatch). When modern lifestyles took over in the 1970s commons were mostly abandoned.


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Read 6 tweets
Aug 24, 2023
The miracle of Usami: at 11:58 A.M. Sept. 1st 1923 a great earthquake struck the Tokyo region. Near the epicenter was Usami village, where no one was killed or injured while neighboring villages each had hundreds dead and wounded. How?
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The villagers of Usami had an exceptionally long memory. Records, monuments and tales of a huge 1703 quake had been preserved and stories of what happened was still in vivid memory. The locals acted unbelievably fast, evacuations started as soon as the trembling stopped.
An 8m tsunami struck the seaside village only 5 min after the quake. Locals were already arrived at and safe within historical evacuation grounds: temples, bamboo thickets, stands of trees, where their ancestors had marked out safe spots centuries before (circle: 1703 tsunami) Image
Read 4 tweets
Aug 11, 2023
The post town Tsumago-Juku (pop 400) in Japan was founded in 1601. In 1960 it took a unique decision to dedicate itself to its own preservation by three golden rules: "No selling, no letting, no destroying." Every renovation or rebuilding even of private homes is done in common.


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The town's main income is obviously tourism, but in order to preserve the town the locals figured out a method where they build and renovate as much as possible by themselves, together. One ex. is the town's six remaining "ancient style" ishiokiyane: shingle roofs held by rocks. Image
The roofs are made of wood shingles, only the bottom row nailed, the rest held down by horizontal battens and rocks. They are relaid every few years, broken shingles discarded, leaks fixed etc. Work is led by the most skilled townsperson while a team of 5-20 volunteers help out. Image
Read 5 tweets

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