Emily Prentiss:  You remember when people used to write letters by hand ?
David Rossi: That 's how I wrote my first book . Give me a keyboard any day .
Emily Prentiss: Oh , come on , Rossi . The excitement of seeing an envelope from a friend in your mailbox ? Now it 's just an electronic ding on your computer .
David Rossi: One of my various brothers - in - law was a mailman . He said the expression " going postal " made perfect sense to him . You spend all day delivering a mountain of letters one at a time . Then you go to work the next morning , and there 's a whole new mountain to deal with . And it 's forever .
Emily Prentiss: That sounds like our job . It took seven years for the world to get rid of Rod Garrett and fifteen minutes after , a new _ one _ pops up to take his place .