so i ate half the chocolate bar, but was it a full chocolate bar when i started, or half of a chocolate bar which i ate half to make a full chocolate bar but then i noticed that it was 1/3 a bar and i said was it 3/3 a bar to start off with, and i noticed that there was 2/3 left so i said yes this is a full chocolate bar because i ate 1/3 plus 2/3 to equal 3/3 which equals a full chocolate bar.. wunderbar rox