If a larger outside economy decides it needs those resources, it can be difficult, if not impossible, for the traditional economy to protect itself.
Use the most visible parts of the board for the most important points.
You can see the direct results of your labor and what can be produced from it. Follow the rule - words and letters should increase in height by 1" for each 10ft increase in viewing distance.
Have a plan for your board work. Each family or group is working to meet their specific needs and nothing more.
Then your children will also be farmers. Even then, an unpredictable weather event, earthquake, or other natural disaster can immediately devastate the traditional economy and put its livelihood in jeopardy.