[k0]

Common, dramatized problem. Hiring can be only occasionally perfect.

"Will burns the proof. Lambeau tries to save it.

LAMBEAU: You're right, Will. I can't do this proof. But you can, and when it comes to that it's only about ... it's just a handful of people in the world who can tell the difference between you and me. But I'm one of them.

WILL: Sorry.

LAMBEAU: Yeah, so am I. Most days I wish I never met you. Because then I could sleep at night, and I wouldn't have to walk around with the knowledge that there's someone like you out there ... . And I didn't have to watch you throw it all away ..."

http://www.qedcat.com/moviemath/GoodWill.htm