Vocabulary is a...
 

So, I'm writing this essay and don't know the word for this...thing. I need to know the term used for the idea that everyone depends on each other. As in, there can't be a pianist without someone to make the piano, and there can't be someone to make the piano if there's no one to get the wood from, and so on. Do you guys know the name for this?

codependent......?

Codependency - Wikipedia, the free encyclopedia

Uhmm..no.

Also, I'm going for a noun, not an adjective. A name to be more specific. Such as, Consumerism or materialism.

Edit: Here's a small excerpt of where I need it: "...one cannot learn a skill or craft, such as blacksmithing, without a master to teach an apprentice how, where, and when to hit the metal, or more importantly, someone to make a forge and anvil. A pianist cannot learn the art, unless someone was there to build a piano, or to tune it. However, this is merely the idea of ______, and does not even begin to show...."

circumstantial inter-social assistance?

I agree,

your theory is flawed.

to learn from a "master" aka "standing on the shoulders of Giants"
is quicker.

but one can learn skills through trial and error as well as mental problem solving and logic.

It's not my theory. I thought this was already a theory?

everything is of course interconected,

but to take it to such a level then you ultimatly end up with Sol (the sun).

it sounds like you are refering to teching/learning and the retention of knoledge by society as a whole.

I think the term you are looking for is interdependence, which creates continuity or a continuum.

I'm referring to everything depending on something.

what i'm trying to say is that ultimnatly everything is dependent on quark-gluon interaction (on the quantum level)

you can take it as far back or forwards as you like.

chicken and egg (PS egg came first)