To understand the local economy, we must first examine what it is that human beings need. First and foremost, we require what is needed to sustain any form of life; food, reproduction, and waste elimination.
The "atom" of the local economy is, by necessity, the family unit, consisting of one or more adults, with or without children. The adults in the family unit obtain what is needed to sustain the people in their unit. If each family on earth were given a plot of land sufficient to grow enough food and provide sufficient water, the problem of food would be solved. Add a composting toilet to help complete the cycle. If that were sufficient, there would be no need for such a thing as money. Add to the food and waste elimination the question of reproduction, and it is now necessary for people to be able to travel in order to encounter an appropriate partner. If sufficient travel can be accomplished on foot, there is still no need for money.
In a world with a limited population, living only in the warm climates eliminated the need for shelter; clothing and dwellings. In the modern world, there is not enough space for that, and we must protect ourselves from the elements elsewhere, by wearing clothing and sleeping in a protected area. We'd probably want a way to cook the food we grow; with a limited amount of space, growing sufficient food that can be eaten uncooked is unlikely. Now, one needs to have a source of energy to cook the food, and possibly heat the dwelling.
Civilisation became more sophisticated when people achieved a level of comfort that permitted time for non survival oriented activities. By learning to build dwellings, we increased the possibilities.
Universal Health Care requires a sufficient number of trained medical practitioners, and adequate facilities and equipment. Medical practitioners should not earn an exhorbitant salary. However, since a medical education is expensive, the pool of money paid into a universal health care program should cover the cost of the education. The most suitable and willing of the available population will avail themselves of the opportunities for a free education.
Universal Health Care should be made available to all Americans and their families at an equal cost, regardless of ones race, income, or other difference. The cost is that of the pool, divided by the number of Americans. Supply equals demand. An unemployed American has equal access to the health care pool as an employed one.