1.   A control system is currently under development for combining the output from the different modules in an intelligent manner.

2.   The new speech recognition system is not absolutely foolproof, but it is a huge breakthrough.?

3.   A rationing system would be a major step backwards.

4.   A self-monitoring tax system is clearly open to abuse.

5.   A system can only be stable if the center of gravity is under the pivot point.

6.   A system is anything that talks to itself.