1. Define a modular system architecture that can provide:
   1. additive fabrication processes
   2. subtractive fabrication processes
   3. other fabrication processes
   4. arbitrary motion control kinematics
   5. arbitrary platform scale (from > meters to < micrometers)
   6. many materials per product
   7. incorporation/embedding of exogenous objects into products
   8. fabrication process simulation
   9. material property evolution simulation
   10. human client interface
   11. software client interface
   12. automatic product feasibility assessment (can product matching input specs be built with the fabrication system described)
   13. online product quality control (feedback)

Draft Functional Block Diagram for NextFab System: Block diagram for functional behavior of a fabber system with intelligent product planning and process feedback control