This is an interesting paper. While it may feel like it isn't new, anyone who follows nanotechnology and writers like K. Eric Drexler will know this level of c

This is an interesting paper. While it may feel like it isn't new, anyone who follows nanotechnology and writers like K. Eric Drexler will know this level of construction is yet another rung in the ladder, another step on the road to ubiquitous nanotech.