I guess my question is how does that fit into our current insurance policy and liability laws? For example, with so many things claim to be going to open source, if someone uses a 3d printer to make a screw to fix a car, and an accident occurs, what does it mean to the victim, insurance company, auto company and you?
Does open source actually innovate in areas like making cars? Does closed-source, private industry competition generate better innovation. Are there correlation and/or causation in either approach with new innovation? In other words, maybe it's nice to open discuss ideas but does actual implementation matters if it weren't open source? With software, we certainly have really terrible open source projects that people will use just because it's handy (I am looking at you pycrypto), but in the end we have to build another one. Whereas proprietary software may include custom "pycrypto" library that has private cryptanalysis done on it. It is still safe and useful.