'Note that 100+100 > 100, but that (100+100)+100 < 100.  Incrementing a
serial number can cause it to become "smaller".  Of course, incrementing
by a smaller number will allow many more increments to be made before
this occurs.  However this is always something to be aware of, it can
cause surprising errors, or be useful as it is the only defined way to
actually cause a serial number to decrease.'

def test_surprisingAddition(self):

    self.assertTrue(((serialNumber8(100) + serialNumber8(100)) > serialNumber8(100)))
    self.assertTrue((((serialNumber8(100) + serialNumber8(100)) + serialNumber8(100)) < serialNumber8(100)))
