A Fortune 500 company was interviewing for a CFO, and narrowed the field down to 4 candidates - a mathematician, a market researcher, a statistician, and an economist. Because they were so close in every other respect, they brought all 4 in together for an executive panel interview.
The CEO asked the interviewees "What's 2+2"?
The mathematician replied "Four".
The market researcher said "Ha! I heard you asked the tricky questions! So..." - and here he rustled through the pile of paperwork he'd brought with him - "...yesterday I surveyed 100 second grade teachers, and the most common answers ranged between 3 and 5".
The statistician looked sideways at the columns of figures in front of the market reseacher, spent a few minutes jotting on a napkin, and said "I can state with 95% confidence the answer is four".
The economist glanced at the rest of the candidates with barely-disguised pity, leaned over the desk, and whispered in the CEO's ear...
"What would you like it to be?"