Robert Towne: I wanted something that would really shock you and make you feel that the capacity for really cruel violence was always lurking there. The snip of a man’s nostrils is an act of violence that appeals to the viewers imagination, which is, “Jesus Christ, that must hurt!” Then Roman didn’t allow his leading man to recover from this little nose nick. He plastered that Band-Aid across Jack’s face, with the stitches in it, and he lived with it throughout the lecture. People said, “That’s a hell of a thing to do to a leading man. That’s stupid!” But it added credibility. If you get hurt, you don’t recover so quick. Also, you’ve got that thing about being nosy and being a private detective and having your nose slashed.