I don‘t know if it was HN or not but it could have been here. Anyway, I read about this concept of a 6 day week (with a 2 day weekend) without losing any produ

I don‘t know if it was HN or not but it could have been here. Anyway, I read about this concept of a 6 day week (with a 2 day weekend) without losing any productivity. The key was that the society is going to be split in 3 groups so that every group would have 2 different days off. The overlap for any 2 groups is only 2 days. I find this highly interesting and have since tried to find out more about it.