Well I dare say it would have to be able to cope with missing screws and
that bit that's always left over at the end LOL :)

For a start a closed sytem will make its own screws. If you are
assembling a flatpack the CAD program will draw up an inventory of
parts. A screw is in fact a part and the system checks that the
inventory is present. I have myself written a program which does just
that. It uses Pro Engineer routines to gets the sub assemblies and then
goes down to parts.

If you are disassembling a complicated system it will remember where it
has put all the parts and sub assemblies. Unlike us the system will not
forget.

Well I suppose that would limit their options and mean they would have to
remain loyal to humanbeings. Of course they would have to be intelligent to
the point of knowing they couldn't take over the maufactuing process So
staging a mass revolt and declaring war on their masters would be futile.

As I keep saying. The system would really be no more intelligent than
ProEngineer. The system will be derived from PE and have it and all the
user callable subroutines available.