For me, making a movie is kind of like vomiting. Not that film is like vomit, but more like this mass of ideas and thoughts that you have and just have to put them out there. It's not even about making perfect sense - it's more about making perfect nonsense. I don't do too much soul-searching or self-analysis. I just enjoy making things.
If you take all the factories in the world today, they could make all the parts necessary to build more factories like themselves. So, in a sense, we have a self-replicating industrial system today, but it would take a tremendous effort to copy what we already have.