A true, because useful, definition of economy is: science of survival.
Survival here means staying alive in the best possible conditions for as long as possible, everyone and everything, equitably, nothing and nobody excluded or privileged.
Survival is achieved producing survival factors.
To produce means to bring into existence: procuring will, knowledge and materials, and creating something that wasn't there before: a home, a harvest, a song.
A survival factor is something needed to survive: air, water, food, shelter, healh, knowledge, love, freedom, etc.
Since per such a definition everything is economy, economy in a broad sense includes the orientation, the organisation, the management of the economy itself:
The orientation is the ethics: motives and aims.
The organisation is the technique: srtuctures and means.
The management is the administration: supervision and action.
Orientation, organisation and management are in fact a speciality of its own, distinct from what is oriented, organised and managed.
Looking around ourselves, we notice that we are surrounded by a myriad of survival factors, from candies to airplanes, behind which there is a myriad of production lines, from kitchens to mines.
Indeed, economy is a limitless ocean, and so to not go adrift it takes a compass: its foundations, which conversely are few and simple.
They are summed up in the maxim: "Ye shall know them by their fruits."
No matter how intricate, any line that ends with a certain result, begins with a certain intention.
Normal people keep things rolling, make them go right if they can, or at least they try. Indeed they could stand some improvement, but their intentions are clear.
Obviously enough, the root of their difficulties is the influence of the enemies of Humanity.
Obviously enough, first and foremost is the influence of monetary manipulation. The same hidden parasite sucks the blood from everyone, and in doing so drives everybody to slaughter each other, and to stealing and destroying instead of preserving and building.
And therefore, the foundations of the reconstruction of economy too are few and simple.
They are summed up in learning, each and everyone, to detect, isolate and extirpate both the enemies of Humanity and their destructive infiltrations, and to replace them with their opposite.
The turning point is realising what was always there for us to see: Evil is the problem, Good is the solution, not the other way round. Allies, not enemies; help, not betrayal; wisdom, not duplicity; intelligence, not cunning; cooperation, not competition; creation, not destruction; that's the way out.