The Life Of A Copy Editor

Lori Fradkin explains it:

The job has its perks—an accumulation of random knowledge, forinstance—but it also has its side effects when you unintentionallydrink the copy Kool-Aid. Once you train yourself to spot errors, youcan't not spot them. You can't simply shut off the careful reading whenyou leave the office. You notice typos in novels, missing words inother magazines, incorrect punctuation on billboards. You havenightmares that your oversight turned Mayor Bloomberg into a "pubic"figure...