The true mark of a math enthusiast isn't using a calculator—it's knowing that 10! equals 3,628,800 without one. Real mathematicians don't press buttons, they mentally multiply integers in descending order while their friends are still looking for the power button. The factorial function is basically the mathematical equivalent of saying "hold my beer" before doing something unnecessarily complicated but impressive. Next time someone asks you to calculate 10!, just smile knowingly and whisper "3,628,800" before walking away dramatically.