A moment of history. The RepRap project has created circuits for the first time:
Ed and I have a final-year student – Rhys Jones – who’s working on RepRap for his MEng research project. He’s been taking the old idea of depositing metal in channels and an observation of Forrest’s and Nophead’s (that you don’t need a low-melting-point alloy because the specific heat of metals is so low that they shouldn’t melt the plastic anyway).
Also worth a look: Bruce Sterling points to Darwinian Marxism as a means of ensuring the proletariat gain possession of the means of production sans revolution.