So far, we've moved Standard Parabola Guy up and down...  back and forth...  and even flipped him upside down.  All this time, he's kept his basic shape.

Ah...  just when you started to feel really comfortable...  Now, we're going to change his shape!  Don't worry though.  It's not that bad.  Trust me.  Have I lied to you yet?  That you know of?  ( heh-heh )

He'll still have his "U" shape...  We're just going to make him taller and shorter.

It will still be really important for us to keep his basic shape in our heads:

When you go over 1, you go up 1.  That's how tall he is there.

When you go over 2, you go up 4.  That's how tall he is there.