A businessman interviews a mathematician, an accountant, and an economist for a job

A businessman interviews a mathematician, an accountant, and an economist for a job. He asks them, “What is 2 + 2?” The mathematician answers, “Exactly 4.” The accountant replies, “Depending on what your interest, depreciation, and taxes are, approximately 2.” The economist walks over to the door, shuts and locks it, closes the blinds on the window, and leans over and softly asks, “What do you want it to be?”