I would not know these things if I had not looked into how my family ate and lived a few generations ago... easily living (if they were not killed in wars) into their 90's and 100's...
Grandma, 96 now, and my mother have been the two richest sources of information... both know how to can and culture foods.
I am going to learn all I can from them. Both know how to work "with" natures cycles capitalizing on beneficial insects and such, gardening organically... and have never done it any other way.
grandma is the smartest person I know aside from my mother... and she only had 6 years of school. I think that school dumbs us down by losing sight of the big holistic picture of this planet.