21.   The new approach will require fewer engineers.

22.   The other approach only requires changing your attitude.

23.   The only discernible drawback is that such tough-minded approaches might actually require someone in charge to bite a bullet or two.

24.   The problem is, that approach would require Gingrich to show some humility.

25.   The other approach would require the carriers to install new network equipment to determine locations with greater accuracy and would allow customers to keep the handsets they use now.

26.   The Republicans contend that even these approaches require creating what amounts to an embryo in the laboratory and then experimenting on it to produce the desired tissues.

27.   The second approach requires drivers to start looking for a spot in the row closest to the entrance.

28.   This approach requires glossing over a lot of darker issues, of course.

29.   This labor-intensive approach will require training of health workers and their supervisors, he said, along with creation of logistical systems for obtaining, storing and distributing drugs.

30.   Dr. Paula Schomberg, a Mayo Clinic radiologist, said the approach requires more study.