The main feature of artificial ecosystems is their instability. They cannot exist without human participation, since the grown plants cannot withstand competition with wild species, they need to be fed, watered, protected from pests and pathogens. In addition, the dominant crop may die as a result of the spread of diseases or the reproduction of pests. Therefore, a person is forced to create favorable conditions for her: to cultivate the soil, apply fertilizers, water, destroy pests and weeds.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.