Question: What is the sum of 2 + 2?
An accountant will say, “What do you want the answer to be?”
A mathematician will say, “I believe it is 4 but I will have to prove it.”
A statistician will say, “The population is too small to give an accurate answer but on the basis of the data supplied the answer lies between 3 and 5.”
An economist will say, “Based on today’s thinking the answer is 4 but the answer may be different tomorrow”.
An engineer will say, “The answer is 4 but, adding a safety factor, we will call it 5”.