Here is a quote from Albert Einstein in his book The World As I See It:
A hundred times every day I remind myself that my inner and outer life are based on the labours of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.
There’s not really much to add to that, is there? It is a great argument for why we need to think of the economy (and life!) as a set of interconnections and interdependencies.