Exercise1
Exercise2
Exercise3
Exercise4
Exercise5
Exercise6
Exercise7
Exercise8
Exercise9
Exercise10
Exercise11
Exercise12
Exercise13
Exercise14
Exercise15
Exercise16
Exercise17
Exercise18
How These Work
Artists can color the sky red because they know it's blue. Those of us who aren't artists must color things the way they really are or people might think we're stupid.
– Jules Feiffer