11.   In response, a shadow system has evolved in which schools collect resumes and interview candidates outside the central process, then get teachers approved by the board retroactively.

12.   Mating systems have evolved over millions of years, as males and females try to achieve their conflicting agendas.

13.   More options will be made available as the system evolves, Pinder and Barrington say.

14.   Navigation systems will evolve from direction-finding aides to autopilot systems connected to smart highways, leaving the actual driving to Big Brother.

15.   No one is quite sure how the new system will evolve if it withstands court challenges on its constitutionality.

16.   Now these systems are evolving into two-way bargaining.

17.   Perhaps the judicial system has evolved too much from its beginnings.

18.   That is how legal systems evolve.

19.   The Chinese political system is plainly evolving from a Leninist totalitarianism that tried to control all aspects of human life toward a dictatorship more narrowly focused on political repression.

20.   The issue is that our health-care system has evolved to the point where there is no economic incentive even to try.