According to Christopher Porrino, who finished his term as New Jersey’s 60th attorney general early this year, knowing the ”horizon” of a job amounts to professional nirvana.

As rare as it is to become attorney general, Porrino’s situation was even rarer, he said: He took the job more than halfway through the second term of now-former Gov. Chris Christie, knowing that the new governor would replace him at the start of 2018. The position would last for 18 months, and no more.