Ramban on Lekh Lekha: Fathers and Children - Maaseh Avot Siman LaBanim

In this week's shiur, we introduce and explore Ramban's interpretation of Chazal's comment that everything that happened in the stories of the Avot (forefathers), serve as a "siman" for the sons. What does "siman" mean? Ramban views this statement as saying that the actions of the forefathers affect future generations in a metaphysical way, such that future generations play out some aspect of the forefathers' actions and journeys, for better or for worse. But what about the Torah's concept that the "sins of the fathers shall not be visited on the sons"? Is there a real difference between punishments and "consequences"?