Exams exist for some reasons.

1. To approximate how little you slept during lectures and tutorials.

2. It's a signal for you to clear the lectures notes and tutorials off your table (either by keeping it for your future juniors or make a campfire out of it) to make way for the future lecture notes and tutorials to come.

3. It's the only time where NTU will be too quiet. So strange the phenomena it should be a tourist attraction (wth).

4. To find out how bonded are you with Facebook.

5. To make sure that your calculator will not rust because of infrequent usage.

6. To express regrets over yourselves for choosing this particular course.

7. It's the only time where random blog posts seem to make sense.

8. It's the only time where you noticed the existence of your lecture notes.

I wished I could think of more reasons, but my mind is full of "C plus plus", "C plus plus", "C plus plus".

And nope, I'm not measuring my chest size.