The engineer pulled out his slide rule and shuffled it back and forth, and finally announced "It lies between 3.98 and 4.02".

The mathematician said "In two hours I can demonstrate it equals 4 with the following short proof."

The attorney stated "In the case of Svenson vs. the State, 2+2 was declared to be 4."

The trader asked "Are you buying or selling?"

The accountant looked at the business owner, then got out of his chair, went to see if anyone was listening at the door and pulled the drapes. Then he returned to the business owner, leaned across the desk and said in a low voice "What would you like it to be?"