aren't perfect, but they used to be worse...
Doctors, lawyers, teachers, students, musicians, artists, lion
tamers, biologists, physicists, accountants, politicians, professors, firemen,
policemen, FBI agents, CIA agents, KGB agents, real estate agents,
movie tycoons, professional athletes (especially professional athletes), actors
(especially actors), talk show hosts (most especially talk show hosts), and most
everybody else, all get to do what they do because they are surviving off the
excess productivity created by engineers. When it comes right down to the basics of survival,
they're freeloaders. Somebody else is taking care of them - providing the food, water, and shelter they need to survive.
How most of us got to be so "dependent" on other people
is the fascinating story of this section. We are still talking about flows and
changes of energy and matter. Only in this case, it is humans that have created
and manage those flows. We humans have learned how to use energy to magnify our
work output so that some of us can make a lot more of certain things than we need.
The rest of us then don't have to make those things and have to do something else.
Confused? Start exploring.