So rather than using the current manufacturing process, where somebody melts metal and pours it into molds and machines those parts together into an electrical component, in the future, we’ll use microbes and proteins to “grow” them. In a cell, a particular genetic coding manufactures a particular kind of protein that it links to build, say, a cell wall. Well, supposing we modify that so rather than building a cell wall, it builds a substrate for an electronic component. It might be a simple modification to say, “OK, build this in a flat area.” Then you have another one that comes in and says “OK, every few microns we have an electronic lead.”
Mars may already be supporting life.
The next step — and this is one that is speculative — is creating synthetic life.