physical-economy interpretation: the teachers and children are lucky enough to live in a rich society where only a fraction of the population are required to d

physical-economy interpretation: the teachers and children are lucky enough to live in a rich society where only a fraction of the population are required to do productive work such as growing food, distributing clean water, building and maintain housing and providing healthcare services. the teachers and children are freed from the burden of contributing productive work that benefits society and can instead engage in complex art / ritual / prayer activities involving plastic bricks, dice and sudoku.