We have to realize that everything that we learn about our ancestors has passed through filters—some of them even filters of our own. That is an important fact. Filters, by definition, change what passes through them. Instead of learning facts A, B, C, and D, only fact B passes through. We don’t learn the other facts and fact B comes through missing some context. That isn’t right or wrong. It isn’t lying. It is the nature of information preservation but it is also something we need to think about.