1.   As lawmakers return from the recess that began before the national political conventions, they confront a new political calculus.

2.   Compared with outright homelessness, even their bad housing has come to seem acceptable in a new urban calculus that finds something to be better than nothing.

3.   That is what makes antimissile arms the most contentious part of the new calculus.

4.   The scandal of lies and unfaithfulness that has engulfed President Clinton has created a new calculus in the run for office, from Congress to governor.

5.   Under the new social calculus, McNamara may have been wrong about the Vietnam War.

6.   With the Cold War over, the country needs to devise a new calculus for determining when its security is threatened and the use of force is warranted.