The point of this cartoon was history can be interpreted and reinterpreted. Furthermore, what "lessons" can be learned from 911? There are many including increased national security and tolerance for diversity. What lessons we learn from history depend on what the historian was looking for. These lessons could be slanted by bias, inaccurate and unreliable sources, and confirmation bias. History should not be used as a guide. As Heraclitus wrote, "You don't step into the same river twice." History does not repeat.