I started solving the bonus problem on the take-home portion of the midterm for differential equations at about 1am.
At 7:30 am, I decided to finish reading the rest of the problem.
At 7:31 am, I erase everthing I did since 1:30 am and smack myself in the forehead.
The question wasn’t asking me to solve the problem.
The take-home ate my weekend.
If you did solve it, you might get a Nobel Prize, like this fellow.