Circus Manager: How long have you been juggling?
Candidate: Oh, about six years.
Manager: Can you handle three balls, four balls, and five balls?
Candidate: Yes, yes, and yes.
Manager: Do you work with flaming objects?
Manager: . . . knives, axes, open cigar boxes, floppy hats?
Candidate: I can juggle anything.
Manager: Do you have a line of funny patter that goes with your juggling?
Candidate: It’s hilarious.
Manager: Well, that sounds fine. I guess you’re hired.
Candidate: Umm . . . Don’t you want to see me juggle?
Manager: Gee, I never thought of that.
It would be ludicrous to think of hiring a juggler without first seeing him perform. That’s just common sense. Yet when you set out to hire an engineer ...