Listen, I think the German voting system is so complex, I would never be able to explain it to an average American. But DoDo made a great effort. I guess one would have to explain the two different votes we have and how they are called etc. I think I have understood it, but this situation is so rare and unlikely to happen again in the next couple of decades.  The article also said, that the election mathematicians don't even try to really explain it in the media, because they don't want "to give people ideas" about tactical voting.