None, that's what students are for.
Becuase if there were it would be called solved
He worked it out with a pencil.
Here teacher said to go home and do her "essay".
He wrote "1 + 0 = 0" and then spent the rest of the lesson trying to rub one out...
They both tend to shoot up schools.
Student: "Alive".
They are both trying to find their X and they don't know Y.
You look at your X and try to find out Y
