Suppose I tell you to turn 90 degress right, and walk forward a mile... you will end up one mile east, facing east. If I tell you to walk one mile, then turn 90 degrees right, you end up one mile north, facing east. It all depends on the *order* you do these things. However, with these commands, you end up at the same place despite the ordering. To know which place you'll end up, you need to know what order these commands are processed in... right?