>>1209284>>1209288I take it you figured it out?
>>1209302>How do you define self-sufficiency?It is pretty straight forward (pic). Being self-sufficient is absurdly easy. Just grow & raise all your food and have a water well on the property. The amount of stuff you need to grow or raise will depend directly on the type of diet you have. The most important part will be the types of things you grow & raise and the methods you use to do that. The size of land you use to do this is actually not as important. The land size depends on your methods and the number of people you are trying to feed. The latter part doesn't expand the land all to much per person. For instance, 2 people do not need twice as much land as 1 person. Though that still depends on the methods employed.
People who trade for other things are not trading simply because they are not growing or raising something. They choose not to grow or raise those things simply because they can get them from someone else. Their thought process is, "Why raise cattle to eat, when you only need 1 per year and your neighbor raises a herd of 100 cattle and you can trade some veggies for meat once in a while?"
Most people are not self-sufficient, not because they can't be self-sufficient, but because they choose not to be self-sufficient. "Why do something you don't want to do when you can pay someone else to do it?" People who fail at self-sufficiency typically do so simply because they don't know the proper methods, have a diet that is directly based on industrialized farming methods, and/or are lazy in whatever methods they choose to use.