All "8 stools" have been divided from a monolithic piece (2:4:8) and placed in a circle of 6 meters in diameter, like a modern "judgment ring" ("Domarring" are Scandinavian stone circles which date back to the iron age). When you meet in these circles you are "exposed" and need to weigh your words very carefully. The distance of 6 meters (or 8 steps) between opposite stools allows the eye to see others in “one” perception. The eye must "split images" that are closer or farther away (a physical phenomena). Family therapists claim that it's important to maintain a similar distance in your home, otherwise you will end up divorced. A discussion group made of 8 people is presumed to be ideal.
My hands suffered severely from all the grinding and vibrations of these stools. Do schedule a lot of breaks if you ever decide to grind rocks!

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