Are people getting dumber?

I just saw a Who Wants to be a Millionaire question worth $8000 which asked:

Which of the following is not an integer?
a. 1
b. 1/2
c. 0
d. -2

AND THE GUY DIDNT KNOW AND USED A LIFELINE!

>>5
No, just no. A) Process of elimination "which of these things is not like the other, motherfucker?" B) People are retarded. They should know what damned integer is.